About YepCalc

YepCalc is a set of free calculators for practical questions: how much concrete, how many tiles, how much paint. Enter your measurements and get a number you can take to the store. No sign-up, no account.

The calculators run in your browser, so the numbers you enter stay on your device (see the Privacy Policy).

Where the numbers come from

The numbers come from manufacturers' data sheets, suppliers, and published studies. When a result depends on a product or material, such as how much concrete a bag makes, how far a gallon of paint goes, or how much a cubic yard of gravel weighs, the calculator page lists the value it uses and where that value came from. Each page also shows its formula, so you can check the math.

How to use the results

Treat each result as an estimate. Products differ between brands, and real projects have offcuts, spills, and uneven ground. Check the label on the product you buy, keep the waste allowance the calculator suggests, and confirm large orders with your supplier.

Who runs YepCalc

YepCalc is run by Masaaki Morishita. It's one of the Yep sites:

• YepCalc — Practical calculators
• YepWatt — Electric bill and EV costs
• YepRecall — Car recalls and complaints
• YepFMR — Fair Market Rents
• YepPlant — Vegetable planting dates
• YepTidal — Tide charts
• YepDinner — Cooking timelines
• YepGS — GS pay and per diem
• YepPhoto — Passport photo crops
• YepMatch — Brackets and round robins
• YepAgenda — Printable calendars
• YepWord — Bingo cards and word games

If a result looks wrong, or you'd like a calculator we don't have yet, email hello@yepcalc.com. The Contact page lists what to include.