Free construction & home-improvement calculators
Concrete, gravel, paint, drywall, square footage and more — accurate estimates that run entirely in your browser. No sign-up, no upload, no limits.
Start with the Square Footage calculator →How it works
Pick a calculator, enter your dimensions, and get instant material quantities — cubic yards, bags, sheets, gallons, tons. Every tool also shows an editable cost estimate so you can plug in your local price. Nothing you type is uploaded; the math happens on your device. New to estimating? Start with the guides, or jump into a ready-made project estimate.
Private by design
CubicCabin calculators run 100% in your browser. Your measurements and prices never leave your device, there's no account to create, and there are no limits on how much you use them.
Common questions
Are CubicCabin's calculators free?
Yes — every calculator is completely free with no sign-up, no account, and no usage limits.
Do my numbers get uploaded anywhere?
No. Everything runs in your browser, so the figures you enter never leave your device and nothing is stored on a server.
How accurate are the estimates?
The math is precise, but material yields and prices vary by product and region. Treat results as planning estimates and add a waste allowance before buying.