Plan Smarter. Build a Better Home.
Simple, accurate calculators for your next home project. Estimate materials, reduce waste, and plan with confidence.
Featured Calculators
Start with one of our most useful home-project tools.
Browse Calculators by Project
Choose the type of home project you’re planning and jump into the calculator that fits the job.
Painting & Walls
Estimate materials for painting, wall finishing and related interior projects before you buy.
Floors & Tile
Plan flooring, tile and surface-material quantities with practical room and coverage estimates.
Concrete & Outdoors
Plan concrete, paving and other outdoor material quantities for patios, slabs and similar projects.
Three Numbers That Make an Estimate More Useful
A calculator is most useful when the measurements going in are clear. These are the three things worth checking before you buy.
Measure the Actual Area
Use the real length, width or wall dimensions of the project area instead of relying on room labels or rough guesses for precise measurements.
Allow for Waste
Cuts, breakage, touch-ups and offcuts can change what you need. Use a waste allowance that matches the material and project.
Check Package Coverage
Paint cans, tile boxes, flooring cartons and concrete bags are sold in fixed sizes, so compare the estimate with the product label before purchasing.
Start With the Numbers Before You Start Buying.
Use HomeBuild Metrics to estimate common project materials, then compare the result with the specifications of the products you plan to buy.