Guides
The 15 calculators on this site each show their own formula, assumptions and worked example. These guides cover the parts that sit underneath all of them — the takeoff method itself, and the reference figures the calculators apply on your behalf.
THE METHODHow to Estimate Materials for Any Home ProjectThe five-step takeoff method behind every estimate on this site: measure the real surface, convert units, divide by coverage, add waste, round up to retail packaging.Updated July 25, 2026
REFERENCEWaste Factors Explained: Typical Rates by MaterialTypical waste percentages for flooring, tile, drywall, shingles, concrete, pavers and lumber — what drives each figure, and why compaction is not waste.Updated July 25, 2026Apply it
Or go straight to a calculator
Every tool below applies the method and the waste factors from the guides above, and shows its working.
Concrete & LandscapingSlab, patio, and driveway takeoffs that come back as cubic yards, bag counts, base gravel and bedding sand — never just one line item.4 CALCULATORSBuilding & ExteriorRun lengths and footprints in; posts, rails, pickets, squares and bundles out — priced low / typical / high with labor broken out.5 CALCULATORSInterior & RemodelingRooms in; gallons, sheets and boxes out — plus itemized kitchen, bath and basement budgets scaled to scope and finish level.6 CALCULATORS