Body Fat % Calculator
Estimate your body fat percentage using the BMI-based formula.
Input Values
kg
cm
Yrs
Results
Enter values to see results.
⚠️ Results are indicative only. Consult a qualified professional before making any decisions.
What is this Calculator?
The Body Fat % Calculator estimates your body fat percentage using a BMI-based formula that incorporates your age and gender. Body fat percentage is a more accurate indicator of health than BMI alone, as it distinguishes fat mass from lean muscle mass.
How to Use
1
Enter Weight & Height: Enter your weight in kg and height in cm.
2
Enter Age: Enter your current age in years.
3
Select Gender: Select Male or Female.
4
View Results: See your BMI, Body Fat %, and fitness category.
Frequently Asked Questions
For men: 6–24% is healthy (athletes 6–13%, fitness 14–17%, acceptable 18–24%). For women: 16–30% is healthy (athletes 16–20%, fitness 21–24%, acceptable 25–31%).
The most accurate methods are DEXA scan, hydrostatic weighing, and air displacement plethysmography. Less accurate but more accessible methods include skinfold calipers, bioelectrical impedance (body fat scales), and BMI-based formulas.
As we age, metabolism slows and lean muscle mass naturally decreases — leading to higher body fat even at the same weight. This is why age is a factor in the body fat formula.
Yes. Essential body fat is approximately 3–5% for men and 10–13% for women. Below essential fat levels, the body cannot function properly — hormonal disruption, organ damage, and bone density loss can occur.
The most effective approach combines a moderate calorie deficit (not extreme), resistance training to preserve muscle, adequate protein intake (1.6–2.2g per kg), and consistency over months.
BMI-based body fat formulas give an estimate with a margin of error of 3–5%. For accurate measurement, consult a nutritionist or fitness professional for a proper body composition assessment.