Concrete Calculator

Choose a slab, wall, or round column, enter dimensions, quantity, and waste allowance, then estimate concrete needed.

Shape

Quantity

Waste (%)

Price per cubic yard ($)

Length (ft)

Width (ft)

Thickness / depth (in)

—Cubic yards

—Cubic feet

—Cubic meters

—10-yd truck loads

—Approximate 40 / 60 / 80 lb bag counts.

Bag yields vary by product; the bag estimate uses approximately 0.30 / 0.45 / 0.60 ft³ per 40 / 60 / 80 lb bag. Confirm coverage on the product label.

How to use this Concrete Calculator

Estimate concrete volume, cubic yards, and common bag counts. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.