About DIY Takeoff

DIY Takeoff is a collection of free material and cost estimators for home improvement projects: concrete, paint, gravel, drywall, roofing, and more. A takeoff is what contractors call a material count, and every calculator here shows its formula so you can check the math yourself.

The name comes from the trade. A takeoff is the step where a builder takes quantities off the plans, counting every material a job needs before anything is bought or built. That is exactly what these calculators do, sized for DIY projects instead of commercial bids.

Where the numbers come from

Each calculator uses standard industry formulas and widely published material constants: bag yields printed by concrete manufacturers, coverage rates from paint and stain labels, and conventions like three shingle bundles per roofing square. Wherever an assumption could reasonably vary, it is exposed as an input with a sensible default rather than hidden in the code, and every page explains its formula in plain language.

What these tools are for

They are planning tools. They will get your shopping list very close, but real projects have irregular shapes, product variations, and local code requirements that no calculator can see. Use the results to budget and order, then confirm quantities against the packaging of the exact product you buy, and consult a professional for structural work.

Suggest a calculator

If there is an estimator you wish existed, ask. New calculators are added regularly, and reader suggestions decide what gets built next. You can reach the site through the contact page.