Body Composition Calculators

Calculate BMI, body fat percentage, lean body mass, waist-hip ratio and more.

Adult BMI Calculator

Body Mass Index with WHO/CDC classification.

Teen BMI Calculator

BMI-for-age percentiles for ages 2–19.

Body Fat Percentage

Estimate body fat using Navy method and BMI-based formulas.

Calculate lean body mass from weight and body fat.

FFMI Calculator

Fat-Free Mass Index for body composition assessment.

Waist-Hip Ratio

Cardiovascular risk indicator based on waist/hip circumference.

Waist-Height Ratio

Central obesity indicator: waist circumference ÷ height.

Body Age Calculator

Estimated biological age based on BMI and lifestyle factors.

Height Weight Ratio

Simple weight-to-height ratio with population percentiles.

Ideal Body Weight

Devine, Robinson, Miller and Hamwi formulas.

Standard Weight Chart

WHO and NHANES weight ranges by height.

About Body Composition

Calculate BMI, body fat percentage, lean body mass, waist-hip ratio and more. All calculations follow evidence-based formulas from WHO, CDC, NIH, USDA and other public health standards.

SITE-WIDE YMYL DISCLAIMER

VivMetric is a reference website, not a healthcare provider. All values shown on this page (body-composition, nutrition, fitness, sleep, and related metrics) are computed from standard published formulas and population-level reference ranges. They are descriptive reference information only and do not diagnose any medical or health condition. No diagnostic, prognostic, prescriptive, or therapeutic content is provided or implied. Consult a licensed qualified healthcare professional for all personal health decisions.

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