FFMI Calculation
Author: yuggrExecutions: 2076576
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This calculator computes the FFMI (Fat-Free Mass Index), also known as the "muscle mass index."
*This metric is not particularly effective for men with a body fat percentage of 25% or higher or women with a body fat percentage of 35% or higher.
| FFMI | |
| Lean Body Mass (LBM) | kg |
| Body Fat Mass | kg |
| Basal Metabolic Rate (BMR) | kcal |
| Estimated Muscle Mass | ～ kg |
| Estimated Muscle Mass | ～ % |
| BMI |
The BMI formula is 1.3 × weight ÷ height (m)².²⁵ (Adopting the modified formula by Lloyd N. Trefazen, which takes height into account)
The muscle mass percentage standards are as follows:
[Men]
30.9% or less: Low
31%–34.9%: Standard
35%–38.9%: Slightly high
39% or higher: High
[Women]
25.9% or lower: Low
26%–27.9%: Normal
28%–29.9%: Slightly high
30% or higher: High
The muscle mass percentage standards are as follows:
[Men]
30.9% or less: Low
31%–34.9%: Standard
35%–38.9%: Slightly high
39% or higher: High
[Women]
25.9% or lower: Low
26%–27.9%: Normal
28%–29.9%: Slightly high
30% or higher: High
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