Body fat percentage calculator
Estimate your body fat percentage with US Navy tape measurement method. You no need gym equipment.
Share dis tool
Put am for your site
Related tools
About di US Navy method
Di US Navy tape method dey estimate body fat percentage with simple measurement wey you fit take with tape. For men, e dey use neck and waist measurement. For women, e dey use neck, waist, and hip measurement. E no dey as accurate as methods like DEXA or hydrostatic weighing, but plenty people like am because na only tape measure you need and you fit repeat am for house easily.
Result dey depend well-well on how correct your measurement be. Make you measure for di same time of day, use flexible tape measure, and make di tape tight small but no press your skin. E still help if you take each measurement two times and use di average.
Formula
Men: BF% = 86.010 × log₁₀(abdomen − neck) − 70.041 × log₁₀(height) + 36.76
Women: BF% = 163.205 × log₁₀(waist + hip − neck) − 97.684 × log₁₀(height) − 78.387
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.
Related articles
Body Fat Percentage for Men by Age — Wetin Normal and Wetin You Fit Aim ForBody fat percentage benchmarks for men dey change as age dey increase. For here, you go see healthy ranges by age decade, how e take compare with athlete/fitness standards, and how you fit measure your own body fat for house.
BMI Dey Accurate for Athletes? Why Di Number Many Times No Tell Di Full StoryAthletes fit see BMI result wey fit mislead because muscle change di whole picture. Dis guide explain whether BMI dey accurate for athletes and why body-fat context dey matter pass.
BMI for Women vs Men: Wetin Dey Change, Wetin No Dey Change, And Wetin You Suppose WatchBMI dey use the same formula for women and men, but body-composition difference still matter. This guide explain how BMI take apply across sexes and where body-fat context fit help pass BMI.