Fat-Free Mass Index
The FFMI calculation tool is a tool that allows you to easily calculate "FFMI (Fat-Free Mass Index)" by simply entering "height", "weight", and "body fat percentage". It can also calculate "FFMI", "FFMI rating", "lean body mass", and "body fat mass".
How to use
- Enter "height", "weight", and "body fat percentage".
- Automatically displays "FFMI", "FFMI rating", "lean body mass", and "body fat mass". will be displayed.
What is FFMI?
FFMI (Fat-Free Mass Index) is calculated by dividing body weight by height. It is a calculated index used to measure muscle mass and physique balance, and is particularly useful for evaluating muscle development and health.
Characteristics of FFMI
- BMI (Body Mass Index) only considers weight and height, but FFMI emphasizes muscle mass.
- BMI can sometimes lead to muscular people being deemed obese, but FFMI allows for a more accurate assessment of body shape.
- It is useful for tracking changes in muscle mass, such as in fitness and bodybuilding. Suitable for:
How to calculate FFMI
FFMI = Lean body mass (LBM) / Height (m)²
Lean body mass (LBM) = Body weight (kg) × (1 - body fat percentage)
FFMI calculation example
Weight: 70kg
Body fat percentage: 15%
Height: 175cm (=1.75m)
Lean body mass (LBM) = 70kg × (1 - 15%) = 59.5kg
FFMI = 59.5kg / 1.75m² ≒ 19.4
FFMI evaluation criteria
| FFMI value | Evaluation |
|---|---|
| Up to 17 | Slender (thin) |
| 17-19 | Average |
| 19-21 | Muscular |
| 21-23 | Athlete level |
| 23 and above | Bodybuilder level |
※ The limit for natural (no doping) is 22-23.
Notes
This tool is available for free.
※This program is created and confirm the operation in PHP8.1.22.
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