FFMI Calculator

Calculate FFMI





Formula

To calculate the FFMI:

\[ FFMI = \frac{w \cdot (1 - \frac{bf\%}{100})}{h^2} \]

Where:

What is FFMI?

FFMI stands for Fat-Free Mass Index. It is a measure of the amount of muscle mass an individual has relative to their height. FFMI is important because it helps assess an individual’s muscle development and overall body composition, which can be useful in various contexts such as sports performance, nutrition planning, and monitoring changes in muscle mass over time.

Example Calculation 1

Let's assume the following values:

Using the formula:

\[ FFMI = \frac{180 \cdot (1 - \frac{15}{100})}{1.75^2} \approx 49.96 \]

The Fat-Free Mass Index is approximately 49.96.

Example Calculation 2

Let's assume the following values:

Using the formula:

\[ FFMI = \frac{200 \cdot (1 - \frac{20}{100})}{1.80^2} \approx 49.38 \]

The Fat-Free Mass Index is approximately 49.38.