About Remodel Calculators

Free construction calculators built on published industry standards — with a Pro plan for contractors who need more.

What This Site Is

Remodel Calculators provides accurate construction material estimate tools for contractors, builders, and DIY homeowners. Every calculator uses coverage rates, waste factors, and formulas drawn from recognized standards — PCA, MPI, NRCA, ACI 318, and manufacturer specifications.

Results are estimates. Actual material needs vary by site conditions, surface preparation, and applicator technique. Verify quantities with your supplier before ordering.

Free to Use — Pro for Professionals

Free (No Account Needed)

  • ✓ All 13 calculators, unlimited use
  • ✓ Industry-standard formulas with waste factors
  • ✓ Copy and print results
  • ✓ Professional guides and blog
  • ✓ Save up to 3 projects (free account)

Pro — $12/mo or $99/yr

  • ✓ Detailed material cost breakdowns with editable prices
  • ✓ Unlimited saved projects
  • ✓ Smart contractor forms (Quote, PO, Invoice, Change Order)
  • ✓ Auto-fill forms from calculator results
  • ✓ Print-ready PDF documents

Available Calculators

Exterior

Exterior paint, deck stain, roofing, siding, lap siding, fence, mulch

Interior

Interior paint, drywall, drywall screws, flooring, backsplash tile

Foundation & Concrete

Concrete calculator for slabs, footings, posts, columns, stairs, and walls

Industry Standards

Coverage rates, waste factors, and estimate formulas follow published professional specifications.

How to Use a Calculator

1

Select a Calculator

Choose the calculator that matches your project — concrete, paint, siding, roofing, drywall, flooring, and more.

2

Enter Dimensions

Input your project measurements. Each calculator includes a guide to help you measure correctly.

3

Review the Estimate

Results include material quantities and waste factors. Pro users also get cost breakdowns with editable unit prices.

4

Save & Generate Documents (Pro)

Save your project and generate a pre-filled client quote, purchase order, invoice, or change order in one click.

Who Uses These Calculators

  • ✓Painting Contractors: Quick exterior and interior paint estimates for client quotes
  • ✓General Contractors: Material estimates for siding, roofing, drywall, and concrete — plus professional contractor forms
  • ✓DIY Homeowners: Reliable material estimates before a hardware store run
  • ✓Property Managers: Budget planning for exterior and interior maintenance projects

Estimates, Not Guarantees

Results are material estimates based on standard coverage rates and waste factors. Actual quantities depend on surface condition, texture, application method, and installer technique. Confirm final quantities with your material supplier and verify compliance with local building codes before purchasing or starting work.

Built for the Trade

Remodel Calculators is an independently operated site built to provide straightforward construction material estimate tools based on published standards — with professional contractor tools for those who need them.