How is concrete volume calculated?

Length × width × depth (converted to feet) gives cubic feet. Divide by 27 for cubic yards — the standard unit ordered from suppliers.

Is my project data sent to a server?

No. Homeowner calculators run in your browser. Your measurements stay on your device.

Do I need an account?

No signup is required. All homeowner tools on Online Tool Hub are free to use.

Construction

Concrete Calculator

Calculate cubic yards for slabs, footings, and pads.

Inputs

Length(ft)Width(ft)Depth(in)

Results

Volume: 33.3 cu ft
Concrete needed: 1.23 cubic yards
80 lb bags (approx.): 56 bags

All calculators, planners, and checklists provide estimates for planning purposes only. They are not professional advice. Read full disclaimers

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About Concrete Calculator

Free online concrete calculator. Calculate cubic yards for slabs, footings, and pads. Instant estimates for your construction project — no signup required.

Why choose Online Tool Hub?

Free forever — supported by non-intrusive ads
Privacy-first — calculations stay in your browser
Works on desktop and mobile
Part of 18 free construction tools on Online Tool Hub

Frequently asked questions

How is concrete volume calculated?: Length × width × depth (converted to feet) gives cubic feet. Divide by 27 for cubic yards — the standard unit ordered from suppliers.
Is my project data sent to a server?: No. Homeowner calculators run in your browser. Your measurements stay on your device.
Do I need an account?: No signup is required. All homeowner tools on Online Tool Hub are free to use.