Enter the fat-free mass (kg) into the Calculator. The calculator will evaluate the Cunningham Equation. 

Cunningham Equation Calorie Formula

RMR = 22*FFM+500


  • RMR is the Cunningham Equation Calorie (calories)
  • FFM is the fat-free mass (kg)

To calculate Cunningham Equation Calories, multiply the fat-free mass by 22, then add 500.

How to Calculate Cunningham Equation Calories?

The following steps outline how to calculate the Cunningham Equation Calorie.

  1. First, determine the fat-free mass (kg). 
  2. Next, gather the formula from above = RMR = 22*FFM+500.
  3. Finally, calculate the Cunningham Equation Calorie.
  4. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

fat-free mass (kg) = 140