Concrete Calculator

Use this concrete calculator to estimate how much concrete you may need for slabs, rectangular footings, walls, round columns and round post holes. It turns simple dimensions into usable volume figures, which helps with home projects, renovation planning, material checks and quick quote reviews.

You can switch between common shapes and add a quantity when the same section repeats, such as several footings or multiple holes. The result includes the base volume and an extra allowance for waste, which is useful when you need to order ready-mix, compare options or reduce the chance of running short on site.

The page also shows the volume in cubic meters, cubic yards, cubic feet and liters. That makes it easier to compare metric and imperial references, talk to suppliers and double-check the order before you buy concrete.