Bathroom Remodel Calculator
Most bathroom remodel calculators only count one trade. This one composes four — drywall, interior paint, flooring, and wall tile — into a single materials list, the way an actual remodel happens.
Surface overlaps are handled automatically: if you tile a tub surround, those wall sections are excluded from paint area so you don't over-buy gallons. Every line item shows which underlying calculator it came from so you can drill in for detail.
Works for full baths, three-quarter baths, and half baths / powder rooms. For exterior walls being opened, run the standalone insulation calculator. For traditional mortar shower pans, run the standalone floor mud calculator.
Bathroom Remodel Estimator
Pick scope, size, and finish. Price range updates instantly. Toggle complexity to see exactly what each decision costs.
National range, materials + labor
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How this estimate is built
National ranges, materials + labor combined. Excludes permits, structural work, mold/asbestos remediation, smart-home fixtures, and luxury stone slabs.
Ranges are intentionally wide because actual project cost depends on contractor tier, material availability, demo surprises, and regional labor rates that no calculator can know in advance. Use the Likely number as a planning anchor, not a quote.
For a detailed materials take-off (sheets of drywall, gallons of paint, square feet of tile), see the drywall, paint, flooring, and tile calculators.
How a remodel composer builds your list
A composer isn’t a new calculator — it runs the same standalone calculators you can use on their own and merges their results. These engineering-style diagrams show how one bathroom feeds seven calculators into one list, why the paintable wall is less than the room’s wall area once tile and openings come out, and what a wet-area tile preset actually covers.
The composer-flow diagram shows why entering the bathroom once is enough. The shared dimensions feed seven standalone calculators — drywall, paint, flooring, wall tile, vanity, countertop, trim — each running on its own before the outputs merge into one list, so every material line traces back to the calculator that produced it. The composer orchestrates; it does not re-derive the trade math.
The surface-overlap diagram is the whole reason a composer beats running each trade by hand: it subtracts the tiled area from the paintable wall so you do not buy paint for a surface that will be covered in tile. The paintable wall is the gross wall minus doors, windows, and every tiled surface. Add the trades separately and you over-buy gallons on the tub surround; the composer nets them.
The wet-area-tile diagram explains how a simple preset choice turns into a tile quantity and a paint deduction at the same time. Three alcove walls unfold into a fixed run of tile, and the height you tile to sets the square footage. That tiled area feeds the wall-tile calculator and is deducted from paint, which is why the wet-area preset changes two lines at once.
Want to Learn More?
The correct remodel sequence — demo to punch list — with rough-in order, inspection gates, material lead times, and realistic durations by project type.
Read the Remodel order of operations & timeline guide
Size a dumpster for the whole project
A full remodel produces drywall, flooring, tile, and fixtures all at once. See the recommended dumpster size for this room's scope and how long you'll need it.
Plan disposal for the project →
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How to Use This Calculator
- Enter dimensions: bathroom length, width, and ceiling height in feet.
- Add doors and windows: standard sizes deduct from paintable wall area automatically.
- Pick scope: Refresh (keep existing drywall, repaint) or Full demo (replace drywall, paint over new).
- Configure tub or shower: half bath / powder room, tub or tub-shower with acrylic surround (no tile), tub with tile surround, or walk-in shower.
- Pick floor type: ceramic/porcelain tile or LVP / vinyl plank.
- Pick wall tile material — only shown if you have a tiled wet area or vanity backsplash.
- Pick vanity backsplash: none, 4-inch short, or full backsplash to mirror.
- Click Build my bathroom materials list — line items are grouped by trade with the underlying calculator linked on each row for full traceability.
How surface overlaps are handled
Wall tile area (tub surround, shower walls, vanity backsplash) is excluded from paint area automatically so you don't over-buy gallons. Drywall is only included on full demo. Half bath and acrylic-surround configurations skip wall tile entirely. Every line item shows the underlying calculator it came from — drywall, interior paint, flooring, or backsplash tile — so you can drill in for detail or override defaults on the standalone tools.
Frequently Asked Questions
Can I use this for a half bath or powder room?
Yes. Pick "Half bath / powder room (no tub or shower)" in the Tub or shower dropdown and "No vanity backsplash" if your sink doesn't have a tile splash. The calculator skips wall tile entirely and runs paint over the full wall area. Drywall and floor calculations work the same way as a full bath.
What's the difference between Refresh and Full demo scope?
Refresh keeps your existing drywall — the calculator skips drywall sheets, joint compound, tape, and screws, and treats walls as already painted (so primer is only included if a calc judges it needed). Full demo replaces drywall and treats the new walls as unpainted, which adds primer and a heavier coat schedule. Pick Full demo only if you're actually opening walls — for example, to relocate plumbing, replace a tub-shower combo, or fix water damage.
Why does the calculator subtract tile area from paint?
Paint and tile cover the same square footage of wall. If you tile a 5×3 alcove tub surround to 6 ft high, that's about 33 sq ft of wall that won't be painted — the calculator excludes it from paintable area so you don't over-buy gallons. Vanity backsplashes are excluded the same way. Half baths and acrylic-surround tubs have no tile, so paint covers the full wall area minus doors and windows. The surface-overlap diagram shows the tiled area subtracted from paint.
What size tub surround does the calculator assume?
The Tub with tile surround preset assumes a standard 5 ft × 3 ft alcove tub with tile to 6 ft (72 inches) high — 3 walls totaling roughly 66 sq ft of wall tile. The Walk-in shower preset assumes a 5 ft × 3 ft enclosure tiled to 7 ft (84 inches) — about 77 sq ft. Both use 12×24 in porcelain tile at a 1/8 in joint by default. For other sizes or custom layouts, click through to the Backsplash Tile Calculator from any line item to override. The wet-area tile diagram shows the tub surround versus walk-in shower.
What does the calculator NOT include?
v1 covers materials only for drywall, paint, flooring, and wall tile. It does not include plumbing fixtures (toilet, sink, faucet, tub, shower valve), the vanity cabinet itself, mirrors, lighting, exhaust fans, electrical rough-in, or labor. For exterior walls being opened, run the standalone Insulation Calculator. For traditional mortar shower pans (over a clamping-ring drain), run the standalone Floor Mud Calculator.
How much waste is included for bathroom flooring?
The underlying Flooring Calculator follows NWFA and NTCA standards: 10% waste for straight-lay tile or LVP in a small simple bathroom, 15% for diagonal patterns, 20% for herringbone. Small bathrooms with lots of cuts around toilets, vanities, and tub aprons can run higher — when you have many fixtures relative to floor area, click through to the Flooring Calculator and bump complexity to 'complex' to add a few extra percent.
Why is each line item linked back to a separate calculator?
This is a composer — it runs the standalone Drywall, Interior Paint, Flooring, and Backsplash Tile calculators with shared inputs and aggregates the outputs. Every line item shows which calculator produced it so you can verify the math, override defaults (different tile sizes, waste factors, paint coverage, etc.), or get pricing on the dedicated tool. The math is identical to running each calculator separately and reconciling the wall-tile vs paint overlap by hand. The composer flow diagram shows one room feeding seven calculators.