Concrete Calculator
Estimate cubic yards of concrete for slabs, pads, patios, and footings.
Example
A 12 ft by 10 ft slab at 4 inches thick needs about 1.6 cubic yards with 10% extra.Frequently asked questions
Everything you need to know to read the result with confidence.
What does the Concrete Calculator do?+
Estimate cubic yards of concrete for slabs, pads, patios, and footings.
How do I use this concrete calculator?+
Measure the slab length and width in feet, enter thickness in inches, and keep a waste allowance for uneven grade and spillage.
What inputs should I enter?+
Enter length, width, depth, waste allowance. Leave the default values in place when they match your situation.
What formula does this calculator use?+
Cubic yards = length x width x depth(ft) / 27 x waste multiplier.
Can I share my result?+
Yes. Change the inputs, copy the page link, and the current inputs will be included in the URL for sharing or reopening later.