Enter your height, weight, and body fat percentage into the calculator to determine your FFMI.
FFMI Calculation Formula
The following formula is used to calculate the FFMI from your lean body mass and height.
FFMI = Lean Body Mass / (Height in meters)^2
Variables:
- FFMI is the Fat-Free Mass Index.
- Lean Body Mass is your weight minus the weight of your body fat.
- Height in meters is your height converted to meters.
To calculate the FFMI, divide your lean body mass by the square of your height in meters.
What is FFMI?
FFMI, or Fat-Free Mass Index, is a measure of muscle mass in relation to height. It is a valuable tool for assessing the muscularity of individuals, particularly bodybuilders and athletes. Unlike BMI, which includes both fat and muscle, FFMI focuses solely on lean body mass, providing a clearer picture of one’s muscular development.
How to Calculate FFMI?
The following steps outline how to calculate the FFMI using the given formula.
- First, determine your lean body mass. This can be calculated by subtracting the weight of your body fat from your total body weight.
- Next, convert your height to meters if it is not already.
- Use the formula: FFMI = Lean Body Mass / (Height in meters)^2.
- Finally, calculate the FFMI by plugging in the values.
- 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.
Height = 180 cm
Weight = 75 kg
Body Fat Percentage = 15%
FAQ
1. What is lean body mass?
Lean body mass is the total weight of your body minus the weight of your body fat. It includes muscles, bones, water, and other non-fat tissues.
2. How is FFMI different from BMI?
FFMI focuses on lean body mass in relation to height, providing a more accurate measure of muscularity. BMI, on the other hand, includes both fat and muscle, making it less specific for individuals with high muscle mass.
3. How often should I use the FFMI calculator?
It’s helpful to use the FFMI calculator whenever there’s a change in your body composition, such as after a period of training or dieting, to monitor your muscle development.
4. Can this calculator be used for different body types?
Yes, the FFMI calculator can be used for different body types. It provides a standardized measure of muscularity that can be compared across individuals.
5. Is the calculator accurate?
The calculator provides an estimate of your FFMI based on the inputs provided. For exact figures, it’s best to consult a fitness professional or use more precise measurement tools.