Body Fat Calculator
Estimate your body fat percentage from height, weight, age, and gender. BMI is also displayed.
Body Fat Percentage
Category
BMI
Ideal Weight
How to Use the Body Fat Calculator
This tool estimates body fat percentage using a BMI-based formula. No body composition scale needed.
Formula
- Body Fat (%) = 1.2 x BMI + 0.23 x Age - 10.8 x Gender Factor - 5.4
- Gender Factor: Male = 1, Female = 0
- BMI = Weight (kg) / Height (m)^2
Body Fat Categories
- Male: Lean (<10%) / Normal(-) (10-15%) / Normal(+) (15-20%) / Slightly overweight (20-25%) / Obese (25%+)
- Female: Lean (<20%) / Normal(-) (20-25%) / Normal(+) (25-30%) / Slightly overweight (30-35%) / Obese (35%+)
FAQ
Q. How accurate is this calculation?
A. The BMI-based estimation formula provides a statistical estimate. Results may differ from actual body fat for people with high muscle mass or unusual body types. Use as a guideline.
Q. What are the risks of high body fat?
A. Prolonged high body fat increases the risk of diabetes, hypertension, and other lifestyle diseases. Maintaining healthy body fat through proper exercise and diet is important.
Q. Can people under 18 use this?
A. This formula is designed for adults. Body composition changes significantly during growth, making accurate estimation difficult for those under 18.