Measure twice.
Buy once.
Free calculators that turn your home & garden ideas into a shopping plan. Know how much you need before you head to the store.
Find your calculator ↘What are we working on?
Pick a project. Add your measurements.
Leave with a plan.
Potting soil
The right amount of soil. In quarts, liters, and bags.
Open calculator →Wall paint
Wall area, coats, and whole gallons. Less second-guessing.
Open calculator →Wallpaper
Count full strips, account for repeats, buy whole rolls.
Open calculator →Mulch & raised beds
Turn bed dimensions into cubic yards and bag counts.
Open calculator →Floor tile
Area, cutting allowance, and full boxes to put in your cart.
Open calculator →Patio string lights
Plan a zigzag layout before you choose a strand length.
Open calculator →One less trip to the store.
Measure your space
Grab a tape measure and the product label. We tell you exactly which numbers to bring.
Make it your own
Adjust coverage, waste, package size, and price. See the math behind your estimate.
Take your plan along
Save it in this browser or print a simple shopping plan. No account or subscription.
NOTES ↗
The small details
that change the estimate.
Why wallpaper rolls aren’t just square footage. When to add cutting waste. And how to leave room for a plant’s roots.
Read the measuring guides →