This body fat percentage calculator estimates your body fat from your weight, height, age and sex, using the Deurenberg formula. Everything is calculated instantly in your browser.
How the estimate works
Enter your sex, weight in kilograms, height in centimeters and age, and the result updates as you type. The formula combines your BMI with age and sex to approximate body fat percentage — useful for tracking trends over time, but not a substitute for methods like skinfold calipers or bioimpedance scales.