How To Calculate Concrete Yards

If you’re planning a construction project involving concrete, one of the most important things you’ll need to know is how to calculate concrete yards. This is a crucial step in ensuring you have the right amount of concrete for your project. Here’s what you need to know.

What are Concrete Yards?

Before we dive into the calculations, let’s define what we mean by concrete yards. A concrete yard is a unit of measurement used to describe the volume of concrete needed for a project. One concrete yard is equal to 27 cubic feet of concrete.

Calculating Concrete Yards

To calculate the number of concrete yards you need for your project, you’ll need to know the volume of the area you’re working with. You can calculate this by multiplying the length, width, and height of the area in feet. Once you have the volume in cubic feet, divide it by 27 to get the number of concrete yards you need.

Example Calculation

Let’s say you’re pouring a concrete slab that is 10 feet by 20 feet and 6 inches thick. To calculate the volume in cubic feet, you would multiply 10 x 20 x 0.5 (6 inches is half a foot) to get 100 cubic feet. Divide that by 27 and you get 3.7 concrete yards.


Q: Can I use an online calculator to determine how many concrete yards I need?

A: Yes, there are many online calculators available that can help you determine the number of concrete yards you need. Just make sure you input the correct measurements.

Q: Do I need to add extra concrete for waste and spillage?

A: Yes, it’s always a good idea to order a little extra concrete to account for waste and spillage. A good rule of thumb is to order 10% more than you think you’ll need.

Q: How do I know what type of concrete to order?

A: The type of concrete you need will depend on your project. Talk to your concrete supplier to determine what type of concrete is best for your project.


Calculating concrete yards may seem like a daunting task, but it’s actually quite simple once you know the formula. By following the steps outlined above and taking into account any waste or spillage, you can ensure you have the right amount of concrete for your project. Remember, if you’re ever unsure, don’t hesitate to ask for help from a professional.