Enter the mass of the element (g/mol) and the mass of the compound (g/mol) into the Mass Ratio Calculator. The calculator will evaluate and display the Mass Ratio. 

Mass Ratio Formula

The following formula is used to calculate the Mass Ratio. 

MAR = ME / MC *100

  • Where MAR is the Mass Ratio (%)
  • ME is the mass of the element (g/mol) 
  • MC is the mass of the compound (g/mol) 

How to Calculate Mass Ratio?

The following example problems outline how to calculate Mass Ratio.

Example Problem #1:

  1. First, determine the mass of the element (g/mol). 
    • The mass of the element (g/mol) is given as: 3.25.
  2. Next, determine the mass of the compound (g/mol). 
    • The mass of the compound (g/mol) is provided as: 4.00.
  3. Finally, calculate the Mass Ratio using the equation above: 

MAR = ME / MC *100

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

MAR = 3.25 / 4 *100 = 81.25 (%)


Example Problem #2: 

For this problem, the variables required are provided below:

mass of the element (g/mol) = 6

mass of the compound (g/mol) = 7

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

MAR = ME / MC *100 = ?