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Calcultors

Concrete Slab Calculator

Easily determine the exact amount of concrete needed for your slab project.

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    Results

    • 3
    • Bags
    • Cost

    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!

    3 Simple Steps

    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!

    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
    A diagram of slab measurements
    Concrete slab dimensions

    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.

    Record, Save and Update

    Yes, it's that easy. Now you can keep track of your concrete projects throughout your entire career. Bookmark this page and you're calculations will be here when you return.

      • Dimensions
        A diagram of slab and footing measurements
        • Length
        • Width
        • Thickness
        • Quantity
      • Dimensions
        • Length
        • Width
        • Thickness
        • Quantity
      • Dimensions
        A diagram of slab and footing measurements
        • Length
        • Width
        • Depth
        • Quantity
      • Dimensions
        A diagram of column measurements
        Column Dimensions
        • Height
        • Diameter
        • Quantity
      • Dimensions
        A diagram of curb and gutter measurements
        • Length
        • Flag Thickness
        • Gutter Width
        • Curb Height
        • Curb Depth
        • Quantity
      • Dimensions
        A diagram of stairs measurements
        • Platform Depth
        • Width
        • Rise
        • Run
        • # of Steps
        • Quantity
      • Dimensions
        A diagram of circle and tube measurements
        • Outer Diameter
        • Inner Diameter
        • Height
        • Quantity
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