Free home project calculators

Know how much to buy before you head to the store. Enter your measurements and get a number you can shop with.

Paint CalculatorGallons needed for a room, with doors, windows, and coats. Mulch CalculatorBags or cubic yards for any garden bed. Concrete CalculatorBags of mix for a slab, pad, or walkway.

How these work

Each tool uses standard coverage and volume figures, and you can change the assumptions to match the product you are buying. Results are estimates, so check the label on your product and round up if you are close.