About iDIYCalc
iDIYCalc is a free online collection of home improvement calculators built to help American homeowners plan projects with confidence.
1. Our Mission
Every DIY project starts with one question: "How much material do I need?" Get that number wrong and you end up with extra trips to the hardware store, wasted money, or running out of supplies halfway through. iDIYCalc exists to give you a fast, reliable estimate before you buy.
2. What We Offer
Material Estimators
Enter your dimensions and get instant quantities for paint, tile, flooring, concrete, mulch, drywall, and more.
Project Planners
Factor in waste percentages, overlap, and coverage so you order the right amount the first time.
Unit Converters
Switch between square feet, square yards, gallons, liters, and bags without digging through a spreadsheet.
Cost Calculators
Combine your material estimate with local pricing to land on a realistic project budget.
3. How Our Tools Work
Every calculator on iDIYCalc runs entirely in your browser using plain vanilla JavaScript. That means:
- No sign-up — open the page and start calculating.
- No downloads — nothing installs on your device.
- No data submission — your inputs stay on your device and are never sent anywhere.
- No fees — every tool is 100% free to use, as often as you need.
4. Built for American Homeowners
Our calculators default to imperial units — feet, inches, gallons, and pounds — because that is what you will see on the shelf at your local hardware store. We focus on the projects American homeowners actually tackle: painting a bedroom, tiling a bathroom, pouring a small slab, reseeding a lawn, or building a deck.
5. Why We Built This
We have stood in the paint aisle ourselves, doing mental math on coverage per gallon, trying to remember whether we measured the wall in feet or inches. iDIYCalc was created to take that guesswork out of the weekend project — to make DIY a little less stressful and a lot more predictable.
6. Privacy First
Because all calculations happen locally in your browser, we do not need to collect or store your data. There are no accounts, no tracking pixels on the calculator pages, and no hidden forms. You arrive, you calculate, you leave — that simple.
7. Get in Touch
Have a calculator you would like us to add, or spotted something that needs fixing? We would love to hear from you. Reach out through our Contact Us page.