About DIY Calculator

DIY Calculator helps homeowners and contractors estimate materials for home improvement projects accurately and quickly. Our calculators are built by people who have done the work — we know how frustrating it is to over-buy materials or make two trips to the hardware store because you ran short.

Enter your dimensions and get instant, accurate estimates that include appropriate waste factors. All calculators are free, no account is needed, and no data you enter is stored or shared.

Why We Built This

After too many trips back to Home Depot and too much leftover tile in the garage, we decided to build the calculators we actually needed. Simple, accurate, and fast. No complicated interfaces, no signups, no ads blocking the results.

Accuracy

Our calculators follow standard industry formulas and include appropriate overage factors (typically 10% for rectangular rooms, more for diagonal or irregular patterns). Results are estimates — always verify with your supplier before ordering large quantities.

Contact

Questions or suggestions? Contact us here. We respond within 1-2 business days.