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Body Fat Calculator

Body Fat Calculator

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Detailed Guide Coming Soon

We're working on a comprehensive educational guide for the Body Fat Calculator in your language. The content below is shown in English.

Hva er Body Fat Calculator?

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A body fat percentage calculator estimates fat mass as a proportion of total body weight using skinfold measurements, circumference methods (US Navy), or BMI-derived formulas.

Calkulon makes complex calculations simple — built for students and everyday problem-solvers.

Formel

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f(x)US Navy (men): %BF = 86.010×log(waist−neck) − 70.041×log(height) + 36.76; (women): 163.205×log(waist+hip−neck) − 97.684×log(height) − 78.387

Variabelbeskrivelse

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SymbolNavnEnhetBeskrivelse
%BFBody fat percentage%—
WWaist circumferencecm—
HHeightcm—
NNeck circumferencecm—

Slik Body Fat Calculator

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  1. 1US Navy method (men): 86.010×log(waist−neck) − 70.041×log(height) + 36.76
  2. 2US Navy method (women): 163.205×log(waist+hip−neck) − 97.684×log(height) − 78.387
  3. 3Jackson-Pollock: uses skinfold caliper measurements
  4. 4DEXA scan is the gold standard but requires clinical equipment

Løste eksempler

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Eksempel 1
Gitt:Male, waist 85cm, neck 38cm, height 178cm
Resultat:Body fat ≈ 86.010×log(47) − 70.041×log(178) + 36.76 ≈ 17.5%

Praktiske anvendelser

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Fitness tracking and progress monitoring

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Athletic performance assessment

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Health risk evaluation

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Nutritionist consultation baseline

Body Fat % Categories (ACE)

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CategoryMenWomen
Essential fat2–5%10–13%
Athletes6–13%14–20%
Fitness14–17%21–24%
Acceptable18–24%25–31%
Obese25%+32%+

Ofte stilte spørsmål

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Q

What's a healthy body fat percentage?

A

Athletes: 6-13% (male), 14-20% (female). Fitness: 14-17% (male), 21-24% (female). Varies by age and sport.

Q

Is BMI the same as body fat %?

A

No. BMI = weight/height² and doesn't distinguish muscle from fat. Body fat % is more accurate for health.

Q

How accurate is the Navy method?

A

Accurate within ±2-3%. DEXA scan (clinical) is more precise but requires equipment and cost.

Kun til informasjonsformål. Dette verktøyet erstatter ikke profesjonell medisinsk rådgivning, diagnose eller behandling. Rådfør deg alltid med kvalifisert helsepersonell.
Formula-verified for precision
Reviewed October 2026
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