# FFMI Calculator

Determine your fat free mass index

 Fat Free Mass 160.13 lbs Body Fat 22.88 % FFMI 22.46 Normalized FFMI 22.46
imperial
metric
Height
ft in
cm
3 feet 8 feet
Weight
kg
lbs
65 lbs 350 lbs
Body Fat
%
0 % 100 %
Below Average 16
17
Average 18
19
Above Average 20
21
Excellent 22
23
Superior 24
25
Suspicious 26
27
28
Unlikely 29 30

## What is FFMI

FFMI stands for fat free body mass index with which you can calculate the amount of muscle mass relative to height. This index used by bodybuilders to compare themselves to others.
Also FFMI is a an alternative to body mass index.

## FFMI formula

Total Body Fat = Weight * (body fat [%] / 100)
Lean Weight = Weight * (1 - (body fat [%] / 100)
FFMI = (Lean Weight / 2.2) / ((Feet * 12.0 + Inches) * 0.0254)2
Adjusted FFMI = FFMI + ( 6.3 * (1.8 - (Feet * 12.0 + Inches) * 0.0254))

## FFMI interpretation

The calculated normalized ffmi can be interpreted using the tables below. You also need to consider that the interpretation for men and women will be different, so there are 2 tables.

### FFMI score for men

FFMI Body fat Description
17-18 10-18% Skinny man
18-20 20-27% Average man
19-21 25-40% Fat man
20-21 10-18% Athlete / Intermediate gym user
24-25 8-20% Bodybuilder / Powerlifter / Weightlifter

### FFMI score for women

FFMI Body fat Description
14-15 20-25% Skinny women
14-17 22-35% Average women
15-18 30-45% Fat women
16-17 18-25% Athlete / Intermediate gym user