Enter the volume of the substance (mL) and the volume of all substances (mL) into the Volume Fraction Calculator. The calculator will evaluate and display the Volume Fraction. 

Volume Fraction Calculator

Use the main tab for mixture volume fraction and % v/v. Use the second tab to calculate geometric volume when dimensions are fractions or mixed numbers.
Volume Fraction / % v/v
Volume with Fractions
Mixture volume fraction
Enter any two compatible values. Good combinations include component + total, component + solvent, solvent + total, fraction + total, percent + total, fraction + component, or percent + component.
Volume with fractions calculator
Choose a shape, then enter dimensions as whole numbers, simple fractions, or mixed numbers. Leave the whole number blank for a simple fraction like 3/4.
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Volume Fraction Formula

The following formula is used to calculate the Volume Fraction. 

Vf = Vs / Va
  • Where Vf is the Volume Fraction (mL/mL)
  • Vs is the volume of the substance (mL) 
  • Va is the volume of all substances (mL) 

To calculate volume fraction, divide the volume of the individual substance by the volume of all of the substances.

How to Calculate Volume Fraction?

The following example problems outline how to calculate Volume Fraction.

Example Problem #1:

  1. First, determine the volume of the substance (mL).
    1. The volume of the substance (mL) is given as: 40.
  2. Next, determine the volume of all substances (mL).
    1. The volume of all substances (mL) is provided as: 100.
  3. Finally, calculate the Volume Fraction using the equation above: 

Vf = Vs / Va

The values given above are inserted into the equation below:

Vf = 40 / 100 = .40 (mL/mL)

Example Problem #2: 

The variables needed for this problem are provided below:

volume of the substance (mL) = 90

volume of all substances (mL) = 180

Entering these values and solving gives:

Vf = Vs / Va = .50 (mL/mL)