# how many square feet are in a yard of concrete?

November 3, 2023

Author: Michael Day

**IN ONE CUBIC YARD OF CONCRETE - there is 81 square feet at 4 inches thick**.

The amount of square feet you'll get from a yard of concrete will be determined by how thick (depth) your concrete slab is.

A concrete slab that's 8' x 10' x 4" thick will take 1 yard of concrete.

How many square feet does a yard of concrete cover at different thicknesses?

The chart below shows you the exact amount of sq. ft. you'll get @ various depths.

## how many square feet in a yard of concrete 4 inches thick?

Most of the concrete floors and slabs I do are 4 inches thick. That's a normal thickness for most garages, patios, walkways, and shed slabs.

If the concrete slab is **4 inches thick** then I'll **get 81 square feet from 1 yard** of concrete.

- A 10' x 10' concrete slab that's 4" thick will take 1.23 yards of concrete
- A 10' x 12' concrete slab that's 4" thick will take 1.48 yards of concrete
- A 20' x 20' concrete slab that's 4" thick will take 4.94 yards of concrete
- A 24' x 24' concrete slab that's 4" thick will take 7.11 yards of concrete

## how much concrete do you need?

You can use the chart above to figure how many yards of concrete you need.

Since the chart tells you how many square feet are in 1 yard of concrete at a certain depth, you can use this formula to figure total yardage for your project.

At 4" thick the formula would look like this:

- Length X Width ÷ 81 = yardage (example 24' x 24' = 576 sq. ft. 576 ÷ 81 = 7.11 yards of concrete)

At 6" thick the formula would look like this:

- Length X Width ÷ 54 = yardage (example 24' x 24' = 576 sq. ft. 576 ÷ 54 = 10.66 yards of concrete)

The number you divide by will be determined by the depth. Use the chart above to figure out which number that is for you based off the depth of your slab, patio, driveway, etc.

### use this concrete calculator to see how many yards you need

The concrete calculator below will help you determine the correct concrete yardage for your project.

Just type in your Length, Width, and thickness. Use feet and inches if you're in the USA, (or meter & centimeter) if you use the metric system.