Enter the total volume of voids and the total volume of the soil into the Void Ratio Calculator. The calculator will evaluate and display the Void Ratio. 

Void Ratio Formula

The following formula is used to calculate the Void Ratio. 

n = VV / VS *100

  • Where n is the Void Ratio (%)
  • VV is the total volume of voids 
  • VS is the total volume of the soil 

How to Calculate Void Ratio?

The following example problems outline how to calculate Void Ratio.

Example Problem #1:

  1. First, determine the total volume of voids. 
    • The total volume of voids is given as: 40.
  2. Next, determine the total volume of the soil. 
    • The total volume of the soil is provided as: 80.
  3. Finally, calculate the Void Ratio using the equation above: 

n = VV / VS *100

The values given above are inserted into the equation below and the solution is calculated:

n = 40 / 80 *100 = 50 (%)

Example Problem #2: 

For this problem, the variables required are provided below:

total volume of voids = 80

total volume of the soil = 90

Test your knowledge using the equation and check your answer with the calculator above.

n = VV / VS *100 = ?