Concrete Slab Calculator

How It Works

Take the hassle out of math and simplify your concrete planning with our free concrete slab calculator.

With just 3 straightforward steps, you can quickly determine the exact amount of concrete required for your project. Whether you have various dimensions or need to calculate for multiple slabs, our app is equipped to handle it all. Let's start calculating!

Step-by-Step Tutorial

Calculating how much concrete you need for a slab has never been easier. Follow these 3 simple steps to make the process seamless and efficient. Let's get started!

1. Choose Your Settings

Select your unit type, cost type (by bag or by the yard/meter), bag size, cost and desired waste amount. Your settings will be automatically saved for when you come back the next time.

2. Choose Your Shape(s)

‍We understand that many projects require multiple shapes or dimensions. Choose from a slab, footing, column, stairs, curb/gutter, circle/tube or any combination of them—it doesn't matter how many you have, we'll do the heavy lifting.

3. Add Your Dimensions

‍Once your shapes are added, input the dimensions that you've measured for each of them. After that, your results will be shown!

In the below example, we added a slab that's 10x10 and 4 inches thick.

Note: Only 1 unit is required! Some will prefer 62 inches; others 5 feet 2 inches. With our calculator, we leave the choice up to you.

Pretty easy, isn't it?

Edit, Save and Repeat

Now you can easily measure all of your concrete projects. Bookmark this page and your calculations will be here when you return. When you're done, reset the calculator and start with a fresh one.

How to Calculate Concrete For A Slab

For those who like to do the math by hand, or are curious as to how it's done, below is the formula used:

The Formula: Length × Width × Depth or Thickness

To accurately measure a concrete slab, start by obtaining the length and width of the slab using a tape measure. Measure both dimensions in the same units for consistency.

Next, determine the depth or thickness of the slab, which represents the vertical distance from the top surface to the bottom. Ensure your depth measurement also uses the same units.

Once you have these three dimensions, multiply them together (length × width × depth) to calculate the volume of concrete required for the slab.