
Free home improvement calculators

Tallyard is a free collection of 44+ home improvement calculators across 11 categories- paint, concrete, roofing, decking, flooring, HVAC, electrical, lumber, and more. What sets it apart: every calculator shows the exact formula it used, cites the source (IRC, NEC, manufacturer data sheets), and rounds results to practical purchase quantities. You can't buy 2.67 gallons of paint, Tallyard tells you to buy 3, and shows you why. There are no signup forms, no email capture, no contractor lead gen, skewing the recommendations. Alongside the calculators are in-depth buying guides that use real cost math to compare materials over 20-30 year horizons. Built for DIYers and homeowners who want to verify the numbers before spending money.
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