Estimate body fat percentage using the U.S. Navy tape-measure formula.
U.S. Navy circumference method (log-based).
Male, 175 cm, neck 38, waist 85 → ≈ 17.4% body fat.
The U.S. Navy tape method gives a quick body-fat estimate without calipers or a scale — accurate to within a few percentage points for most people.
Neck below the larynx; waist at the navel; hips at the widest point (women).
No, but it's directionally right and free.
Calculate your body mass index and see which WHO category it falls in.
Estimate the calories you burn each day (TDEE) based on age, sex and activity.
Enter a date of birth to see your exact age down to the day.