Body fat percentage calculator

Estimate your body fat percentage using the US Navy tape measurement method. No gym equipment needed.

Sex

Measure am for navel side (men) or for the narrowest point (women)

Body fat %
Fat mass
Lean mass
Body fat categories (ACE)
Essential fat2–5%
Athletes6–13%
Fitness14–17%
Acceptable18–24%
Obesity≥ 25%

Frequently asked questions

Wetin be healthy body fat percentage?

According to American Council on Exercise (ACE), healthy body fat ranges na 18–24% for men and 25–31% for women. Athletes dey usually fall for 6–13% range for men and 14–20% for women. Essential fat — di minimum wey body need for basic physiological functions — na 2–5% for men and 10–13% for women. To go below essential fat levels dey dangerous.

How accurate US Navy tape method be?

US Navy method get error margin of roughly ±3–4 percentage points compared to DEXA scanning, wey people dey call di gold standard. E better pass BMI for estimating body composition, but e no precise reach skinfold calipers, hydrostatic weighing, or bioelectrical impedance analysis (BIA). E best as tracking tool to monitor trends over time, no be for absolute accuracy.

Where exactly I suppose measure my waist?

For men, measure waist for level of belly button (navel), for end of normal exhale. For women, measure for di narrowest part of di torso, usually just above di belly button. No suck in your stomach. Consistent measurement technique important pass absolute accuracy — measure for di same point always to track changes well.

Body fat percentage fit dey lower than BMI suggest?

Yes, e common for athletes and people wey get high muscle mass. Muscular person fit get BMI for overweight range but body fat percentage for athlete or fitness category. Na one reason why body fat percentage dey more informative for health risk than BMI alone, especially for people wey dey exercise regularly.

Wetin be lean mass and why e matter?

Lean mass na everything for your body wey no be fat — muscles, bones, organs, water, and connective tissue. E dey metabolically active, meaning e dey burn more calories for rest than fat tissue. To preserve lean mass during weight loss important to prevent your metabolism from slowing too much. High protein intake and resistance training na di most effective ways to protect lean mass during deficit.

How often I suppose measure my body fat?

Once every 4–6 weeks dey enough for most people. Body fat dey change slow — weekly measurements dey often show noise instead of real change. For most consistent results, measure for di same time of day (ideally morning, before you chop), with di same tool, and by di same person. Hydration levels and bloating fit affect circumference measurements well well.