Free Construction & Remodeling Calculators
The whole library in one place — 114 free calculators grouped by trade, plus cost guides, side-by-side comparisons, and how-to references. No signup, ever. Type in the box to filter across everything, or use the chips to jump to one kind of tool.
Prefer to browse by subject? Every trade also has a topic hub with its calculators, guides, and diagrams together.
Showing 214 of 214
Bathroom Cabinets CalculatorEstimate vanity cabinets, sink cutout, plumbing rough-in, linen tower, medicine cabinet & mirror. Powder, full & primary baths. ANSI/KCMA & NKBA. Free.Cabinet CalculatorFree cabinet calculator — estimate cabinets, doors, drawers, hinges, slides, knobs, pulls, fillers, and trim from your base, wall, and tall linear feet.Countertop CalculatorCalculate net square feet, slabs, edge LF, seams, and weight for granite, quartz, marble, and butcher block. NSI, ANSI/ISFA, NKBA. Free.Kitchen Cabinets CalculatorEstimate kitchen cabinets, doors, hinges, slides, knobs, pulls, and trim by tier — RTA, stock, semi-custom, custom. ANSI/KCMA & NKBA. Free.
Breaker Size CalculatorWhat size breaker do you need? Free NEC calculator from amps or watts — 125% continuous rule, standard 240.6(A) ratings, and the wire it must pair with.EV Charger Circuit CalculatorWhat wire and breaker does your EV charger need? Free NEC Article 625 calculator by EVSE amps — 125% rule, hardwire vs plug, GFCI, and run length.Garage Subpanel CalculatorWhat wire to a detached garage or shed? Free NEC calculator for the 4-wire feeder — size by amps and distance, plus ground rods, disconnect, and burial.Generator Size CalculatorWhat size generator do you need? Free calculator from the loads you want to back up — running watts, motor-starting surges, and sizing headroom.Hot Tub Wiring CalculatorWhat size wire and breaker for a hot tub? Free NEC Article 680 calculator — GFCI circuit, wire gauge, the 5-ft disconnect rule, bonding, and burial depth.Mini Split Breaker CalculatorWhat size breaker and wire for a mini split or central AC? Free NEC Article 440 calculator from the nameplate MCA and MOP — with real spec examples.Recessed Lighting CalculatorHow many recessed lights do you need? Free calculator for fixture count, grid spacing, and wall offsets — with a brightness check for your room type.Tankless Water Heater Breaker CalculatorHow many breakers does an electric tankless water heater need? Free calculator by model — circuits, wire per circuit, total amps, and a service-size check.Voltage Drop CalculatorHow much voltage do you lose over a wire run? Free NEC K-factor calculator for volts and % drop by wire size, length, and load — with the 3% check.Welder Circuit CalculatorWhat breaker and wire for your welder? Free NEC Article 630 calculator from the nameplate primary amps and duty cycle — the rule most pages skip.Wire Size CalculatorWhat gauge wire do you need? Free NEC wire size calculator by amps, wiring method, and run length — with derating, 240.4(D), and appliance presets.
Bags of Concrete CalculatorHow many bags of concrete do you need? Free calculator for 40, 50, 60 & 80 lb bags for a slab, footing, or post holes — plus a bags-to-yards converter.Concrete CalculatorInstantly calculate cubic yards, 60lb/80lb bags & mix for slabs, footings & posts. Free concrete calculator, results in seconds—no signup needed.Rebar CalculatorFree rebar calculator: exact bar count, linear feet, weight, and stock sticks to buy for slabs, driveways, footings and round pads. ASTM A615 & ACI 318.
Deck Beam Span CalculatorHow far can a deck beam span? Free calculator for beam size, ply, post spacing, footing & cantilever from the joist span it carries — per IRC R507.5 / DCA 6.Deck CalculatorCode-compliant deck framing, decking, footings, ledger, stairs & railing — built on 2021 IRC R507 and AWC DCA 6 tables. Free, no signup.Deck Stain CalculatorInstantly calculate deck stain gallons by wood type—cedar, pine, composite. Covers surface, railings & stairs separately. Free, fast, no signup needed.Fence CalculatorInstantly calculate fence posts, rails, pickets & concrete for wood, vinyl & chain link fences. Follows IRC post-spacing standards. Free, no signup.
Baseboard CalculatorHow much baseboard do you need? Free calculator for linear feet, stock pieces, shoe, nails and caulk from a room, a wall perimeter, or house square footage.Board & Batten CalculatorFree board and batten calculator: exact even batten spacing with a batten in every corner, plus wainscoting box sizes and a full bill of materials.Garage Door CalculatorSize garage door springs (IPPT), cables, opener HP, hinges, struts & wind DP — per DASMA, UL 325, IRC R309.4, FBC §1620, CA SB 969. Free.Interior Doors CalculatorPer-door rough openings, hinge counts, locksets, pocket / barn / bifold / bypass / French / Dutch hardware, casing LF, and IRC code flags. Free, no signup.Shiplap CalculatorFree shiplap calculator: exact board or pack count from the real exposed coverage width, not nominal size. Horizontal, vertical & ceiling runs.Trim & Molding CalculatorCalculate crown molding, casing, chair rail & shoe in linear feet, sticks, fasteners & caulk — plus crown compound-miter angles. WMMPA WM profiles. Free.Window CalculatorPer-window egress (IRC R310), safety glazing (R308), IECC U-factor & SHGC, flashing materials & 25C tax credit status. Free, no signup.
Drop Ceiling CalculatorFree drop ceiling calculator: full and border tiles, main beams, cross tees, wall angle, and 12-ga hanger wires for a suspended T-bar grid. No signup.Drywall CalculatorInstantly calculate drywall sheets, joint compound, tape, screws & cost from your room dimensions. Supports 4×8 and 4×12 sizes. Free, no signup.Drywall Mud & Tape CalculatorFree drywall mud calculator: exact joint compound boxes, tape rolls, and corner bead by GA-214 finish level, compound type, and texture. No signup.Drywall Screw CalculatorHow many drywall screws per sheet? Get exact counts per sheet or full room, walls & ceilings, with 10% overage built in. ASTM C840 spacing. Free.
Carpet CalculatorCalculate broadloom carpet, pad, tackless strip & seam tape with roll-width seam plan, waste & stair runner. CRI 105 standards. Free, no signup.Epoxy Garage Floor CalculatorFree epoxy garage floor calculator: coating gallons or kits, flake, primer & anti-slip by garage size. Mil-thickness math + a moisture-test gate.Floor Mud CalculatorFree floor mud / deck mud calculator. Bag count, mortar bed volume & cement-sand ratios for shower pans, pre-slope & flat floors per ANSI A108.1A.Flooring CalculatorInstantly calculate flooring sq ft, boxes & cost with waste factor for tile, hardwood, laminate, LVP & carpet. Free, accurate, no signup required.Hardwood Flooring CalculatorFree hardwood flooring calculator — cartons of solid or engineered wood by room, plus nails or staples per sq ft, adhesive, felt, and trim.Laminate Flooring CalculatorFree laminate flooring calculator — how many boxes you need by room, plus underlayment, vapor barrier and trim, with acclimation and AC-rating guidance.Subfloor CalculatorOSB or plywood Sturd-I-Floor sheets, screws, ring-shank nails & AFG-01 adhesive — sized off your joist spacing per APA E30 and IRC R602.3. Free.Vinyl Plank / LVP Flooring CalculatorFree vinyl plank flooring calculator — how many boxes of LVP, SPC or WPC you need by room, with waste, underlayment, vapor barrier and trim.
French Drain CalculatorFree French drain calculator estimates gravel (yd³ & tons), pipe length, and filter fabric. Get the right trench size, slope, and #57 stone amount.Retaining Wall CalculatorEstimate blocks, caps, base & drainage stone, geogrid, rebar, timber, or gabion baskets for any retaining wall. Per NCMA & IRC. Free, no signup.
Joist Span CalculatorFree joist span calculator: max spans for floor and deck joists by species, grade, size, and spacing per IRC R502.3.1 and R507.6. No signup.Stairs CalculatorCode-compliant stair geometry, stringers & materials per 2021 IRC R311.7 / 2024 R318.7. Straight, L, U, winder, spiral & curved. AWC DCA 6 stringer spans. Free.Stud Wall Framing CalculatorSize studs, plates, headers, cripples & nails for 2x4 / 2x6 walls. Per 2021 IRC R602.3, R602.7 header spans & R602.3(1) nailing. Free, no signup.
Attic Ventilation CalculatorCalculate attic ventilation net free area, soffit intake and ridge exhaust vent counts, and the 1/150 vs 1/300 IRC R806 ratio. Free, no signup.Batt & Fiberglass Insulation CalculatorFree batt insulation calculator — how many bags of fiberglass or mineral wool you need by wall or attic, with the IECC R-value for your climate zone.Blown-In Insulation CalculatorHow many bags of blown-in insulation do you need? Free calculator for fiberglass or cellulose attic R-value: bag count, settled depth, and blow-to depth.Climate Zone CalculatorFind your IECC climate zone by ZIP code or county, plus the code-required insulation R-values and window U-factors for your zone. Free, no signup.HVAC BTU / Manual J CalculatorCooling + heating BTU, AC tonnage, furnace size, heat-pump balance point — per ACCA Manual J / S, ASHRAE 1%/99%. DOE 2023 SEER2. Free.Insulation CalculatorFree insulation calculator for fiberglass batts, blown-in cellulose, spray foam & rigid board. Bags by square footage, R-value by climate zone, code check.Rigid Foam Board Insulation CalculatorFree rigid foam board insulation calculator — 4×8 sheets of XPS, EPS or polyiso, with board thickness from your target R-value and the code fire barrier.Spray Foam CalculatorSpray foam take-off — board-feet, kit count, R-value, IECC compliance, vapor class. Open vs closed-cell. IRC R806.5 / R702.7 callouts. Free.
Grass Seed CalculatorFree grass seed calculator with extension-cited rates by species for new lawns, overseeding & winter overseed. Get pounds to buy, bags, and starter fertilizer.Gravel CalculatorHow many tons of crusher run, #57 stone, or 21A gravel do you need? Free calculator with per-material densities and compaction — cubic yards, tons and bags.Landscape Material CalculatorCalculate cubic yards, tons & bags for gravel, crushed stone, sand, river rock, topsoil, and riprap. ASTM D448 / AASHTO M43 gradations. Free.Mulch CalculatorInstantly calculate mulch in cubic yards & bags for any bed size. Compares bulk vs bagged cost. Free, accurate landscaping calculator—no signup.Sod CalculatorFree sod calculator: square feet, slabs, rolls, and pallets for your lawn — with editable, region-aware pallet coverage plus topsoil and starter fertilizer.Topsoil CalculatorFree topsoil calculator with project depth presets for new lawns, garden beds & raised beds. Get cubic yards, tons, bags & a raised-bed blend split.
Asphalt Driveway CalculatorCalculate hot mix asphalt tons, aggregate base, tack coat & demo for residential driveways. NAPA & Asphalt Institute specs. Free, no signup.Brick CalculatorCalculate brick veneer, multi-wythe walls, thin brick, pavers, and firebrick. Bricks, mortar bags, ties, weep holes, base aggregate. BIA TN 10.Cinder Block / CMU CalculatorEstimate cinder block (CMU) quantities: blocks, mortar bags, grout, bond-beam & lintel units, and rebar — from ASTM C90 & NCMA TEK. Free, no signup.Driveway Sealer CalculatorFree driveway sealer calculator: sealcoat pails or contractor mix, crack filler, oil-spot primer, and a coal-tar ban check by state. Quantities, no signup.Paver & Patio CalculatorCalculate pavers, base aggregate, bedding sand, polymeric sand, and edging for sand-set, mortar-set, pedestal & PICP installs. ICPI Tech Spec.Polymeric Sand CalculatorHow many bags of polymeric sand do you need? Free calculator for paver & flagstone joints by joint width and brand, plus the bedding sand underneath.Sand CalculatorFree sand calculator for mason, fill, concrete & play sand. Cubic yards, tons & 50-lb bags with compaction and wet-weight built in. ASTM C33/C144 densities.Stone Veneer CalculatorFree stone veneer calculator: flats, corners, mortar, lath, WRB & weep screed for adhered manufactured or thin stone. Corner-to-flat conversion done right.Stucco Calculator3-coat / 2-coat / 1-coat stucco take-off — bags per coat, lath, weep screed, casing, control joints. Per IRC R703.7 / ASTM C926. Free.
Board Foot CalculatorFree board foot calculator: build a lumber cut list and get total board feet, MBF, pieces and linear feet. Nominal sizes or custom hardwood, no signup.Cubic Yards CalculatorFree cubic yards calculator: turn length, width and depth into cubic yards, cubic feet and concrete bags. Add multiple pours, subtract voids, no signup.Linear Feet CalculatorFree linear feet calculator: get running feet from a perimeter, a list of runs, or square feet. Subtract openings, see sticks to buy. No signup.Slope CalculatorFree slope calculator: convert rise and run to percent grade, degrees, inches per foot, and H:1V ratio — plus total fall over your run. No signup.Square Footage CalculatorFree square footage calculator: add multiple rooms or odd shapes, subtract doors and windows, and convert to sq ft, sq yards, square meters and squares.
Exterior Paint CalculatorExterior paint calculator: gallons by house size and surface — vinyl, wood, stucco, brick — with primer and 2 coats counted separately. Free, no signup.Interior Paint CalculatorInstantly calculate interior paint gallons for walls, ceilings & trim—doors and windows subtracted automatically. Free, fast, no signup needed.Wallpaper CalculatorCalculate wallpaper bolts (double-rolls), single-roll equivalents, strips, paste & primer — with pattern repeat & half-drop math. Free, no signup.
Drain Slope CalculatorFree drain slope calculator — minimum fall per foot by pipe size under IPC 704.1 and UPC 708.0, total drop over your run, and DFU capacity checks.Septic Tank Size CalculatorFree septic tank size calculator — minimum tank capacity by state and bedroom count from state code, with garbage-disposal adders and formula-state rules.Sump Pump CalculatorFree sump pump sizing calculator — Total Dynamic Head from static lift, pipe run, and fittings, so you can match the duty point to a pump curve.Tankless Water Heater Size CalculatorFree tankless water heater sizing calculator — peak GPM and temperature rise to the flow rate and BTU/kW you need, with WaterSense and Title 20 presets.Water Heater Size CalculatorFree water heater size calculator using the DOE first-hour-rating method — count your busiest hour's hot-water uses and get the FHR to shop for.Water Softener CalculatorFree water softener sizing calculator — grain capacity from household size and hardness, with ppm conversion, iron correction, and WQA hardness classes.Water Supply Pipe Size CalculatorFree water supply pipe sizing calculator — total water supply fixture units and minimum main size, with the real IPC-vs-UPC fixture-unit difference.Well Pressure Tank CalculatorFree well pressure tank calculator — Boyle's Law drawdown from pump GPM and switch settings, acceptance factor, and the tank size that stops short-cycling.
Attic Conversion CalculatorLive attic conversion cost — bonus room, habitable, or full ADU. Dormer, stair, joist sister, mini-split adders. IRC R305.1 & R310 callouts.Basement Remodel CalculatorLive basement finishing cost range — pick scope, size, finish, region. Egress, bath, sewage ejector adders explained. Free, no signup.Bathroom Remodel CalculatorCombine drywall, paint, flooring, and wall-tile estimates into one bathroom materials list. Tile-vs-paint overlaps handled automatically. Free.Garage Conversion CalculatorLive garage conversion cost — bonus room, habitable, or full ADU. Egress, mini-split, foundation, service upgrade adders. IRC/IECC callouts. Free.Home Addition Cost CalculatorFree home addition cost calculator and estimator — instant low/likely/high price ranges by type, foundation, finish, and region, with soft costs itemized.Kitchen Remodel CalculatorCombine drywall, paint, flooring, and backsplash tile estimates into one kitchen materials list. Backsplash-vs-paint overlap handled. Free.Laundry Room Remodel CalculatorLive laundry room remodel cost range — typology, finish, floor level, plumbing & electrical adders. IRC P2706, NEC 210.8 callouts. Free, no signup.
Gable Area CalculatorFree gable area calculator: get the square footage of a gable end from width and roof pitch or peak height, plus rake trim length and siding waste.Gutter CalculatorSize gutters & downspouts, count hangers, miters, elbows & straps — per SMACNA roof drainage tables & local rainfall. Free, instant, no signup needed.Gutter Size CalculatorWhat size gutters do you need? Free calculator for gutter size (5", 6") and downspout count from your roof area and local rainfall — the SMACNA/IPC method.Metal Roofing CalculatorFree metal roofing calculator: panel count from NET coverage width, exposed-fastener screws or standing-seam clips, trim BOM, and underlayment. No signup.Roof Area CalculatorFree roof area calculator: turn building footprint and roof pitch into total roof area, roofing squares, and shingle bundles. Multi-section, no signup.Roof Pitch CalculatorConvert roof pitch between rise:run, degrees, percent grade and slope multiplier. Get sloped roof area, rafter length and code-allowed coverings. Free.Roofing & Shingle CalculatorFree roofing & shingle calculator — squares, bundles, underlayment, ridge caps & pitch-adjusted waste. Asphalt, architectural & 3-tab. NRCA-based.Soffit & Fascia CalculatorFree soffit and fascia calculator — soffit panels, fascia boards, and F- and J-channel from your eave run and overhang depth, with vented-intake guidance.
Cedar Shake Siding CalculatorFree cedar shake & shingle siding calculator — bundles and squares by weather exposure, single or double course, with corners, coursing and fasteners.Fiber-Cement Panel CalculatorFree fiber-cement panel calculator — 4x8/4x9/4x10 vertical HardiePanel sheets by column-and-row layout, with battens, trim, breakage and fasteners.HardiePlank CalculatorFree HardiePlank calculator — boards, HardieTrim, kickout & butt-joint flashing, fasteners & sealant by HardieZone (HZ5/HZ10). Hardie HS11119 & IRC.House Wrap CalculatorFree house wrap calculator — how many rolls of Tyvek / WRB you need, allowing for the 6-inch overlap that cuts coverage, plus seam tape and cap fasteners.Lap Siding CalculatorFree generic lap siding calculator for LP SmartSide, wood bevel, clapboard & vinyl. Boards per square, exposure, trim, corners & fasteners. Even coursing.Metal Siding CalculatorFree metal siding calculator: panels by net coverage with a real cut list, plus screws or clips, corner & opening trim, flashing, and foam closures.Siding CalculatorInstantly calculate siding panels, trim & accessories for vinyl, fiber cement, wood or metal. Doors and windows subtracted automatically. Free, no signup.T1-11 Siding CalculatorFree T1-11 siding calculator — 4x8/4x9 plywood/OSB panel sheets by shiplap-edge layout, with Z-flashing at horizontal joints, trim and siding nails.Vinyl Siding CalculatorFree vinyl siding calculator: squares, panels, cartons, and every accessory — starter strip, J-channel, corner posts & trim. Doors and windows handled.
Backsplash Tile CalculatorInstantly calculate backsplash tiles, grout bags, thinset & trim for ceramic, glass, marble & mosaic. TCNA/ANSI formulas. Free, no signup needed.Grout CalculatorCalculate how much grout you need in bags, boxes, or epoxy units from your tile size, joint width, and area — TCNA/ANSI coverage formula. Free, no signup.Thinset CalculatorHow much thinset do you need? Free calculator for bags of thinset mortar by tile size, trowel notch, and area, using manufacturer coverage and ANSI rules.Tile CalculatorCalculate tiles, thin-set, grout (TCNA formula), membrane, leveling clips & EJ171 movement joints for floor, wall or shower. Free, no signup.Tile Mortar CalculatorPick the right ANSI mortar (A118.1/.4/.11/.15/.3 or A136.1 mastic) for substrate and tile, then get bag count by trowel notch. NTCA, TCNA, ANSI A108.
Cost Guides
25Attic Conversion CostHow much an attic conversion costs in 2026 — real ranges for a bonus room, bedroom, or ADU by size and finish, plus stairs, dormers, and HVAC adds.Basement Finishing CostHow much it costs to finish a basement in 2026 — real ranges by square footage, scope, and finish level, plus what egress, a bath, or a wet bar adds.Bathroom Remodel CostReal bathroom remodel cost ranges for 2026 by size, scope, and finish — refresh, pull-and-replace, or full gut — plus a free interactive estimator.Carpet CostReal 2026 carpet installation cost ranges by fiber — polyester, nylon, triexta, and wool — per square foot, per room, and per stair, plus a free estimator.Countertop CostReal 2026 countertop cost ranges by material — quartz, granite, marble, laminate — installed per square foot and per kitchen, plus a free estimator.Deck CostReal 2026 deck building cost ranges by material — pressure-treated, cedar, composite, and PVC — per square foot and per project, plus a free estimator.Deck Staining CostReal 2026 deck staining cost ranges — recoat, clean-and-stain, and strip-and-stain per sq ft and whole-deck, plus a DIY budget and free estimator.Driveway CostReal 2026 driveway cost ranges by material — gravel, asphalt, concrete, and pavers — per sq ft, whole-driveway, and cost-per-year, plus a free estimator.Exterior Painting CostReal 2026 exterior house painting cost — whole-house totals and per-square-foot ranges by siding, prep, and size, plus a DIY budget and free estimator.Fence CostReal 2026 fence cost ranges by material and height — wood, vinyl, chain-link, aluminum, and composite — per linear foot and per project, with a free estimator.Flooring CostReal 2026 flooring cost ranges by material — hardwood, engineered, LVP, laminate, and vinyl — installed per sq ft and per project, plus refinish-vs-replace.Garage Conversion CostHow much a garage conversion costs in 2026 — real ranges for a bonus room, bedroom, or ADU by garage size and finish, with every big add priced.Garage Door CostReal 2026 garage door replacement cost ranges by size, material, and opener — from basic steel to glass and wood carriage — plus a free interactive estimator.Home Addition CostHome addition cost for 2026 — real per-square-foot and all-in ranges by addition type, size, and finish, including design, permits, and contingency.Insulation CostReal 2026 insulation cost ranges by material — blown-in, batts, and spray foam — per sq ft and by attic size, plus air sealing, R-values, and a free tool.Interior Painting CostReal 2026 interior house painting cost — per-square-foot and whole-home ranges by size, scope, and prep, plus per-room costs, a DIY budget, and free estimator.Kitchen Cabinets CostReal 2026 kitchen cabinet cost ranges by tier — stock, semi-custom, and custom — per linear foot and for a 10×10 kitchen, plus a free interactive estimator.Kitchen Remodel CostReal kitchen remodel cost ranges for 2026 by size, scope, and finish level — from a refresh to a full gut — with a free interactive estimator.Laundry Room Remodel CostWhat a laundry room remodel costs in 2026 — real ranges for closet, small, full, and mudroom-combo layouts, plus plumbing and electrical add-ons.Patio CostReal 2026 patio cost ranges by material — pavers, concrete, stamped, flagstone, and gravel — per sq ft, whole-patio, and cost-per-year, plus a free estimator.Retaining Wall CostReal 2026 retaining wall cost ranges by material — SRW block, poured concrete, stone, and timber — per sq ft of face and per project, with a free estimator.Roof Replacement CostReal 2026 roof replacement cost ranges by material — architectural asphalt, standing-seam metal, and more — per square foot and whole-roof, with a free tool.Siding CostReal 2026 siding cost ranges by material — vinyl, LP SmartSide, and James Hardie fiber-cement — installed per sq ft and whole-house, with a free estimator.Stucco CostReal 2026 stucco cost ranges — traditional 3-coat, EIFS, and re-stucco installed per sq ft and whole-house, plus repair economics and a free estimator.Window Replacement CostReal 2026 window replacement cost ranges by frame material and insert vs. full-frame — per window and whole-house — plus egress, energy, and a free estimator.
Comparisons (X vs Y)
23Asphalt vs Concrete Driveway: Which Is Better?Asphalt vs concrete driveway compared: cost, lifespan, 20-year maintenance, climate fit, and which pays off for your budget and region.Carpet vs Hardwood vs Vinyl: Which Flooring Wins?Carpet vs hardwood vs vinyl plank compared: cost, lifespan, durability, resale value, and which flooring is best for each room in your home.Cedar Shake vs Vinyl Siding: Cost, Upkeep & ValueCedar shake vs vinyl siding compared: installed cost, the 3–5 year maintenance cycle, lifespan, fire, appearance, and which is the better value for most.Cellulose vs Fiberglass Insulation: Cost & R-ValueCellulose vs fiberglass insulation compared — cost per R, R-value per inch, settling, fire, moisture, sound, and code, plus which to blow in your attic.Cinder Block vs Poured Concrete: Which Is Better?Cinder block vs poured concrete foundations compared: cost, lateral strength, water resistance, insulation, and which is better for your basement.Engineered vs Solid Hardwood: Cost & RefinishingEngineered vs solid hardwood compared — cost, refinishing by wear-layer mm, where each installs over slab/basement/radiant, stability, and lifespan.Gas vs Electric Water Heater: Cost & Which to BuyGas vs electric water heater compared — running cost (rate-dependent), recovery speed, the heat-pump option, install, venting, code, and 2026 rebates.James Hardie vs LP SmartSide: Cost, Fire & WarrantyJames Hardie fiber cement vs LP SmartSide engineered wood: install cost, fire rating, hail impact, warranty, lifespan, and which siding to pick.Metal Roof vs Shingles: Cost, Lifespan & Which WinsMetal roofing vs asphalt shingles compared: cost, lifespan, durability, energy, noise, and resale — plus which roof wins for your climate and budget.Mini Split vs Central Air: Cost, Efficiency & ColdDuctless mini split vs central air compared — cost, SEER2 efficiency and duct losses, whole-house zoning, cold-climate heating, and the real 2026 rebate status.Paver Patio vs Concrete Patio: Cost & DurabilityPaver vs concrete patio compared — cost, cracking and freeze-thaw, base prep, repairs, drainage, and resale value, plus where stamped concrete fits in.PEX vs Copper Pipe: Cost, Lifespan & Which to UsePEX vs copper pipe compared — cost, lifespan, freeze resistance, water quality, code, and DIY install, plus which wins for a repipe or new build.Quartz vs Granite Countertops: Which Is Better?Quartz vs granite countertops compared: cost, heat tolerance, maintenance, stains, food safety, and which is better for your kitchen and cooking style.Shiplap vs Board and Batten: Which Is Better?Shiplap vs board and batten accent walls compared: cost, DIY difficulty, the look, best materials by room, and which suits your wall and budget.Sod vs Seed: Cost, Timing & Which Is BetterSod vs seed compared: cost, how long each takes to establish, seasonal timing, effort, and which is the better way to start or fix your lawn.Spray Foam vs Blown-In Insulation: Cost & R-ValueSpray foam vs blown-in insulation compared — cost (with the board-foot trap), R-value, air-sealing, vapor, code, and which belongs in your attic vs walls.Standing Seam vs Exposed-Fastener Metal Roof: CostStanding seam vs exposed-fastener (screw-down) metal roof compared — cost per square, the fastener-slotting leak problem, lifespan, and slope limits.Stucco vs Fiber Cement Siding: Cost & ClimateStucco vs fiber cement siding compared: installed cost, freeze-thaw cracking, maintenance, fire, and resale — plus which cement cladding fits your climate.Tank vs Tankless Water Heater: Cost, Efficiency & LifeTank vs tankless water heaters compared — cost, DOE efficiency, lifespan, the electric-tankless amperage catch, and 2026 rebates after the 25C credit expired.Vinyl Plank vs Laminate: Cost, Water & DurabilityVinyl plank (LVP) vs laminate flooring compared — cost, waterproof vs water-resistant, mil vs AC wear ratings, feel, and which wins by room, bath to bedroom.Vinyl vs Fiber Cement Siding: Cost, ROI & Which WinsVinyl vs fiber cement siding compared: cost, resale ROI, lifespan, fire, maintenance, and climate fit — plus where LP SmartSide engineered wood fits.Vinyl vs Metal Siding: Cost, Lifespan & ClimateVinyl vs metal (steel & aluminum) siding compared: installed cost, lifespan, fire, and the coastal-steel and hail-aluminum traps that decide it by climate.Wood vs Composite Decking: Cost, ROI & HeatWood vs composite decking compared — installed cost, resale ROI (wood recoups more), heat underfoot, lifespan, maintenance, and joist spacing by material.
Guides & References
52Attic Ventilation Guide: IRC R806 NFA Math & VentsHow much attic ventilation you need — IRC R806.2 1/150 vs 1/300 rules, real NFA values by vent type, intake-vs-exhaust balance, and the mixing mistake.Choosing the Right Paint Sheen: Flat to GlossHow to choose the right paint sheen. Covers flat, eggshell, satin, semi-gloss, and gloss — with durability, washability, and light-reflection tips.Complete Interior Painting Guide: Prep to CleanupInterior painting guide — prep, priming, cutting in, rolling technique, and cleanup. Covers order of operations, mistakes, and finish selection.Concrete Strength: Water Ratio, Weather & AdditivesWhat actually decides concrete strength — the water-cement ratio, ACI cold and hot weather rules, air entrainment, admixtures, fibers, and base prep.Countertop Materials Compared: Quartz to SoapstoneEvery major countertop material compared — heat, scratch, and stain resistance, sealing schedules, and food-safety ratings, with the standards behind each.Countertop Planning: Sizes, Overhangs & Seam RulesStandard countertop heights and depths, NKBA landings and seating overhangs, NSI cantilever limits, slab sizes, seam placement rules, and cutout requirements.Dark to Light Color Changes: Professional GuideHow to paint over dark colors without streaks or bleed-through. Covers tinted primer selection, coat counts, and pro techniques for dramatic color changes.Deck Construction Guide: Joists, Beams, Footings & IRC CodeDeck-building reference based on 2021 IRC R507 and AWC DCA 6: joist spans, beam spans, footings, ledger fasteners, decking, stairs, and railings.Deck Stain Coverage: How Much Per Square FootDeck stain coverage rates by wood condition, stain type, and application method. Manufacturer specs for railings, vertical surfaces, and multi-coat systems.DIY Backsplash Tile Installation: The Complete GuideStep-by-step backsplash tile installation from surface prep through sealing. Substrate, layout, thinset, grouting, and 13 mistakes to avoid.Do You Need a Plumbing Permit? What to KnowWhen plumbing work needs a permit — the minor-work exemptions, why water heater swaps almost always do, license vs permit, and homeowner and well/septic rules.Drywall Screw Guide: How Many Screws Per Sheet?GA-216 screw spacing, coarse vs fine thread selection, correct lengths by drywall thickness, and exact screw counts per 4×8 sheet. Per ASTM C1002.Drywall Types & Finish Levels: Code Spec GuideType X vs moisture-resistant vs abuse-rated drywall, GA-214 finish levels 0–5, framing spacing rules, control joints, and where code dictates each choice.Electrical Permits by State: When Homeowners Can DIYCan you do your own electrical work? State-by-state homeowner rules for all 50 states — license exemptions, permit requirements, and the states that say no.Epoxy vs Polyaspartic Garage Floor: Which Is Better?Epoxy vs. polyaspartic garage floor coatings compared: cost, lifespan, cure time, UV resistance, DIY difficulty, and which system is best for your garage.Floor Tile Installation Guide: TCNA & ANSI StandardsInstall floor tile right — L/360 deflection, plywood subfloors, PEI/DCOF ratings, thinset coverage, waterproofing, and expansion joints. TCNA & ANSI.Framing Rough Openings: Headers, Kings & JacksHow to frame a rough opening — R.O. sizing rules, IRC header tables, jack and king stud counts, cripples, and the dropped-header span reduction.French Drain Guide: Gravel, Pipe, Fabric & SlopeHow to build a French drain — #57 stone, 4″ perforated pipe holes-down, the burrito wrap, the 1% slope minimum, and how much gravel per foot.HardiePlank Installation Guide: HZ5 vs HZ10, Nailing & TrimHardiePlank installation rules from James Hardie HS11119 + ESR-2290: HZ5/HZ10 differences, fastening, butt joints, HardieTrim, kickout flashing, warranty.How Many Rolls of Wallpaper Do I Need? Sizing GuideHow many rolls of wallpaper to buy — bolts vs single rolls, pattern-repeat waste, half-drop math, and door/window deductions, with a worked example.How Much Asphalt Do I Need? Driveway Tonnage GuideHow much asphalt to order for a driveway — the full layer stack, HMA tonnage, base by soil and climate, compaction factor, and drainage.How Much Carpet Do I Need? Roll Width & Waste GuideHow much carpet to buy — roll-width math and fill-piece seams, waste by carpet type, pad rolls, tackless and seam tape, plus stair runner math.How Much Gravel Do I Need? Tons, Yards & Depth GuideCalculate gravel for driveways, patios, and French drains — cubic yards to tons, bag counts, depth by use, density tables, and the compaction factor.How Much Rebar Do I Need? Size, Spacing & WeightHow much rebar to order — bar sizes, spacing and cover defaults, the +1 grid formula, lap splices, and weight per foot from ASTM A615.How Much Sod Do I Need? Pallets, Rolls & Prep GuideMeasure any lawn for sod, choose the right grass, and order the correct pallets and rolls — plus ground prep, the laying pattern, and watering the first weeks.How Much Subfloor Do I Need? Sheets, Screws & GlueHow much subfloor to buy — span rating by joist spacing, sheet counts, the 6-in/12-in screw schedule, glue coverage, and cement board for tile.How to Build a Retaining Wall: Step-by-Step DIY GuideStep-by-step how-to: build a 4-ft segmental retaining wall the right way — base prep, drainage, geogrid, and cap install. Per NCMA & IRC R404.4.How to Install Baseboard & Trim: Step-by-StepHow to install baseboard and trim: cope inside corners, miter outside corners, cut, nail, scribe, caulk and finish like a pro. Casing and crown too.How to Measure Your Room & Calculate Square FootageHow to measure walls, ceilings, and trim for accurate paint estimates. Covers L-shaped rooms, stairwells, angled ceilings, and window and door deductions.How to Plan a Home Remodel: Phase-by-Phase GuideThe complete remodel planning playbook — scope, budget ratios, permits, build order, inspections, and closeout, with IRC citations and DIY-vs-hire calls.How to Read Your Water Pressure (and Fix It)How to test home water pressure with a $10 gauge, the 45–60 psi target and 80 psi code limit, plus PRV, thermal expansion, and low-pressure fixes.How to Sealcoat a Driveway: Coverage, Cracks & CostHow much driveway sealer you need, coal-tar bans by state, the crack-width fix, two-coat technique, cure windows, failure modes, and cost ranges.How to Space Board & Batten (+ Wainscoting Height)Solve even batten spacing with a batten in every corner, get the right wainscoting height, size picture-frame boxes, pick MDF vs PVC, and install it.How to Stain a Deck: Step-by-Step DIY GuideHow to stain a deck step by step: check wood readiness, clean and brighten, apply without lap marks or peeling, then cure and maintain. Free DIY guide.How to Use a Chain Link Fence Calculator (Video Tutorial)Video walkthrough: estimate materials for a chain link fence. Inputs and results for posts, fabric rolls, tension wire, and concrete bags.How to Use a Split Rail Fence Calculator (Video Tutorial)Video tutorial: estimate posts and rails for a split rail fence. Walk through the calculator inputs and results for a 2-rail or 3-rail build.How to Use a Wood Privacy Fence Calculator (Video Tutorial)Step-by-step video tutorial: estimate materials for a wood privacy fence. Inputs and results for posts, pickets, rails, and concrete bags.Insulation R-Value Requirements by Climate Zone (IECC)R-value requirements, material costs, coverage rates, and installation standards for residential insulation. Fiberglass, cellulose, and spray foam compared.Interior Doors Guide: Rough Openings, Hardware & IRCPer-door rough openings, hinges, locksets, casing LF, and IRC flags for pre-hung, slab, bifold, bypass, barn, pocket, French, and Dutch doors.Landscape Material Guide: Gravel, Stone, Sand & TopsoilCalculate cubic yards, tons, and bags for gravel, crushed stone, sand, decomposed granite, river rock, topsoil, and riprap. ASTM D448 / AASHTO M43.Metal Siding Guide: Gauge, Profiles, Cost & InstallMetal siding by gauge, profile, and coating. Galvalume vs aluminum, PVDF vs SMP, HVHZ fastener density. Per MCA, ASTM A653/A792, AAMA, IRC R703.4.Mortar & Thinset Guide: ANSI Class, Trowel Size & Bag CountPick the right ANSI mortar (A118.1/.4/.11/.15/.3 or A136.1 mastic) for substrate and tile, choose a trowel notch, and calculate bag count.Paver & Patio Installation: The Complete Technical GuideConcrete, brick, bluestone, travertine, and porcelain pavers — sand-set, mortar-set, pedestal, and PICP installs. ICPI Tech Spec 2/3/4/18.Remodel Budget Guide: Labor Ratios & ContingencyHow to budget a remodel with ratios that hold up — the two-thirds labor rule, hard vs. soft costs, and how much contingency to carry by project risk.Remodel Order of Operations & Timeline GuideThe correct remodel sequence — demo to punch list — with rough-in order, inspection gates, material lead times, and realistic durations by project type.Remodel Permits & Code: What Needs One (IRC Guide)When a remodel needs a permit and when it does not — plus citable IRC numbers for ceiling height, egress, stairs, and the smoke-alarm retrofit trigger.Remodel ROI Guide: What Returns at Resale (2025)Which remodels pay back at resale — 2025 Cost vs. Value and NAR Remodeling Impact percentages, why exterior projects dominate, and how to use the data.Stairs Building Guide: IRC Code & Stringer Span TablesResidential stair guide — IRC R311.7 / 2024 R318.7 limits, three master equations, AWC DCA 6 stringer spans, six layouts, and 10 inspection fails.Textured Wall Painting: Coverage Rates for Stucco & PopcornCoverage rates and techniques for painting textured walls. Covers knockdown, orange peel, popcorn, and stucco — with extra gallons per texture.What Amp Service Do I Have? 3 Ways to Tell (100 vs 200)How to tell if your house has 100, 150, or 200 amp service — main breaker rating, service wire size, and meter class, plus the cases where each one lies.When You Need Primer: Drywall, Wood & Bare Surface GuideWhen you actually need primer — and when you don't. Industry guidelines for new drywall, bare wood, stain blocking, major color changes, and shiny surfaces.Window Replacement Guide: Egress, U-Factor & SizingHow to size and spec replacement windows — egress net clear opening, where tempered glass is required, U-factor and SHGC by climate zone.
214 tools and guides · updated continuously · free and no signup