Skip to main content
U.S. flag

This is an original und secure website

Fat Free Mass Calculator

kg
%
cm

FFMI is an alternative to BMI where in FFMI, the muscle along with fat mass is considered based on height and weight. But the muscle mass is not taken into consideration in BMI. This online FFMI calculator will help you to find your FFMI using your body fat.

The fat-free mass index is - similar to the BMI - an index that relates your weight, your height and your fat-free body mass (the sum of muscles, blood, water, nerves, organs, bones, etc.) and calculates a value with which you can estimate whether you have too much or too little body fat.

The fat-free mass index (FFMI) is a measure of how pronounced the muscles in the body are. In particular, it describes the increase or decrease in muscle mass.

The FFMI index is not an entirely new concept, but was proposed by scientists as early as the early 1990s to describe nutritional status.

It provides a better picture of body composition than the established BMI value.

Formula of Fat Free Mass Index

■ Lean = Weight * ( 1.0 – (BodyFat / 100.0))
■ FFMI = ( Lean / 2.2 ) / ((Height * 12.0 + Inches) * 0.0254)2
■ Adjusted FFMI = FFMI + ( 6.0 * ( ((Height * 12.0 + Inches) * 0.0254) – 1.8))


Fat free mass index is useful for athlete people who has muscle rich body.

Example

A person weighing 50 kgs, with body 12 % and height 5’4 will have

Lean Weight =

=50 * (1.0 – (12 / 100))
= 50 * ( 1 – 0.12)
= 50 * 0.88
= 44.00 kg = 97 (Pound) lbs

FFMI

 = ( 44 / 2.2) / ((5*12.0) + 4)*0.0254)^2
= 20 / ((60 + 4) * 0.0254)^2
= 20 / (1.6256)^2
= 20 / 2.6425
= 7.56

Adjusted FFMI

 = FFMI + (6* 5 + 12.0 + 4) * 0.0254) – 1.8
= 7.56 + ( 6.0 * ( ((5 * 12.0 + 4) * 0.0254) – 1.8 ))
= 6.522

Fat-free mass is the mass in the body that does not consist of fat. This includes muscles as well as organs, bones, water, tendons, ligaments, blood, nerves, etc.

Fat-free mass makes up about 65 to 85% of the total body mass. This depends on age, sex and individual fitness level. In extreme cases, it may be below or above this range.

In younger people, fat-free mass is higher than in older people, because as people age, they lose muscle mass. For biological reasons, women have a higher body fat percentage than men, but their fat-free mass is lower.

Unlike body fat, fat-free mass is relatively stable. When you eat more food than you consume, your body usually stores fat. As a result, the body fat percentage increases. If you want to increase fat-free mass, then you have to "work" for it and build muscle.

Importend Notes and Disclaimer

 

Caveats and Recommendations: This calculator is NOT intended to diagnose illness or be used as a substitute for medical advice or treatment. Some models provide predictive outcomes which may not be accurate. Please consult a medical professional for any medical treatment or diagnosis advice.

 

Note: This calculator is presented for your own personal use and is to be used as a guide only. Medical and other decisions should NOT be based on the results of this calculator. Although this calculator has been tested, we cannot guarantee the accuracy of its calculations or results.

 

Disclaimer: This calculator is provided without warranty and CANNOT be used to diagnose or treat any disease or condition.

In 51 U.S. states are published

5242 Companies
1654 Counties
2831 Cities

The 5 newest Companies

Better Housing League

9545 Kenwood Rd UNIT 204, Blue Ash, OH 45242

Find the Children

655 Cottage St NE, Salem, OR 97301

Ceres Partnership

1317 Grandview Ave, Ceres, CA 95307

Pace Program Frank Olean Center

472 Main St, Hopkinton, RI 02804

South Central Community Action Program

533 S Main St, Chambersburg, PA 17201

Other Companies

Connecticut PIRG

2074 Park St #210, Hartford, Connecticut 06106

Doniphan County Council-Aging

120 E Chestnut St, Troy, KS 66087

Human Services Department

1004 Campbell St, Warner, OK 74469

Step By Step

664 Exchange St, Vermilion, OH 44089

Hazen Senior Citizens Center

21 7th St NW, Hazen, ND 58545