DIY Calculator

Construction & Landscaping Calculators

Work out exactly how much material to buy before you head to the store or order a delivery. Enter your measurements in feet, inches, yards or meters, and each calculator shows cubic yards, tons, bag counts and an optional cost estimate — updated as you type.

Every calculator shows a diagram of what you measured, the formula it uses, and the material density it assumes, so you can check the math or adjust it for your supplier.

Landscaping

Concrete & Paving

Volume & Area

Flooring, Walls & Lawn

Lumber

Frequently asked questions

How accurate are these calculators?

The math is exact for the measurements you enter. Real projects vary: ground is uneven, materials settle or compact, and densities differ by supplier. That is why most calculators add a small waste allowance you can change.

Do I need to sign up or install anything?

No. Everything runs in your browser, and nothing you enter is sent to our server.