Enter the total body weight (lbs) and the fat weight (lbs) into the Body to Fat Ratio Calculator. The calculator will evaluate and display the Body to Fat Ratio. 

Body to Fat Ratio Formula

The following formula is used to calculate the Body to Fat Ratio. 

BFR = BW / F
  • Where BFR is the Body to Fat Ratio
  • BW is the total body weight (lbs) 
  • F is the fat weight (lbs) 

To calculate the body-to-fat ratio, divide the total body weight by the total fat weight.

How to Calculate Body to Fat Ratio?

The following example problems outline how to calculate Body to Fat Ratio.

Example Problem #1:

  1. First, determine the total body weight (lbs).
    • The total body weight (lbs) is given as: 160.
  2. Next, determine the fat weight (lbs).
    • The fat weight (lbs) is provided as: 40.
  3. Finally, calculate the Body to Fat Ratio using the equation above: 

BFR = BW / F

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

BFR = 160 / 40 = 4.00:1

Example Problem #2: 

For this problem, the variables required are provided below:

total body weight (lbs) = 200

fat weight (lbs) = 50

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

BFR = BW / F = ?