Enter the volume of substance (m^3) and the heat of fusion (J/m^3) into the calculator to determine the Phase Change Energy. 

Phase Change Energy Formula

The following equation is used to calculate the Phase Change Energy. 

Ephase = V*H


  • Where Ephase is the Phase Change Energy ((J))
  • V is the volume of substance (m^3) 
  • H is the heat of fusion (J/m^3) 

To calculate phase change energy, multiply the total volume of substance by the heat of fusion.

How to Calculate Phase Change Energy?

The following two example problems outline the steps and information needed in order to calculate the Phase Change Energy.

Example Problem #1:

  1. First, determine the volume of substance (m^3). In this example, the volume of substance (m^3) is measured to be 4.
  2. Next, determine the heat of fusion (J/m^3). For this problem, the heat of fusion (J/m^3) is calculated to be 6.
  3. Finally, calculate the Phase Change Energy using the formula above: 

Ephase = V*H

Inserting the values from above and solving the equation with the imputed values gives: 

Ephase = 4*6 = 24 ((J))

Example Problem #2: 

Using the same process as example problem 1, we first define the needed variables outlined by the formula. In this case, the values are provide as: 

volume of substance (m^3) = 4

heat of fusion (J/m^3) = 3

Entering these values into the formula or calculator above gives us: Ephase = 4*3 = 12 (J)