Concrete Calculator Slab: Quick & Accurate Measurements

This tool helps you calculate the amount of concrete needed for a slab based on your provided dimensions.







How to Use the Concrete Calculator

To use this concrete calculator, follow these simple steps:

  1. Enter the length of the slab in feet.
  2. Enter the width of the slab in feet.
  3. Enter the thickness of the slab in inches.
  4. Optionally adjust the wastage factor (default is 10%).
  5. Optionally adjust the concrete density (default is 145 lb/ft³).
  6. Click the “Calculate” button to compute the total concrete volume in cubic yards.

How the Calculator Works

This calculator determines the total concrete volume required for a slab of specified dimensions by performing the following steps:

  1. Converts the thickness from inches to feet.
  2. Calculates the initial volume in cubic feet by multiplying length, width, and thickness (in feet).
  3. Converts the volume from cubic feet to cubic yards.
  4. Adds a specified wastage factor to account for potential loss or overage.
  5. Displays the total concrete volume required in cubic yards.

Limitations

  • The calculator assumes a constant concrete density of 145 lb/ft³ which is typical for most concrete mixtures.
  • Wastage and overage factors may vary based on specific project conditions and should be adjusted accordingly.
  • This calculator is intended only for slab calculations and may not be accurate for other types of concrete structures.