Body — Health and fitness
This directory groups body tools within Health and fitness. These health and fitness tools present formula-based estimates, not diagnoses or individualized treatment plans. The collection separates body measurements, nutrition, training, pregnancy timing and clinical relationships so that the purpose of a result is clear before you enter personal values. A reference interval can describe a population without identifying the right target for a particular person. Measurement method, age, life stage and the assumptions of the formula all matter.
Start with these tools
Army Body Fat Calculator
Check the current U.S. Army waist-to-height standard and optionally calculate the legacy 2023 one-site body-fat estimate.
BMI Calculator
Calculate BMI, BMI Prime, ponderal index, adult category, and the corresponding healthy-weight range in metric or imperial units.
Body Fat Calculator
Estimate body-fat percentage with the U.S. Navy circumference method and compare it with a BMI-based estimate.
Body Surface Area Calculator
Calculate body surface area with Mosteller, Du Bois, Haycock, Gehan–George, Boyd, and Schlich formulas.
Body Type Calculator
Classify seven female fashion-industry body-shape categories from bust, waist, high-hip, and hip measurements and calculate waist-to-hip ratio.
Read each tool’s limitations and confirm the units before using an estimate. Pregnancy dates are approximate and do not establish an exact conception day. Body-size screening measures do not capture every aspect of health or body composition. Nutrition examples illustrate an equation rather than prescribing an intake. A qualified clinician can interpret a result alongside information that a browser tool does not have. Calculations run locally, but shared URLs, downloaded reports and browser history can contain the values you enter. Use the available privacy controls, avoid sending sensitive input sets to other people unintentionally, and seek professional guidance for decisions about your care.
body
Army Body Fat Calculator
Check the current U.S. Army waist-to-height standard and optionally calculate the legacy 2023 one-site body-fat estimate.
BMI Calculator
Calculate BMI, BMI Prime, ponderal index, adult category, and the corresponding healthy-weight range in metric or imperial units.
Body Fat Calculator
Estimate body-fat percentage with the U.S. Navy circumference method and compare it with a BMI-based estimate.
Body Surface Area Calculator
Calculate body surface area with Mosteller, Du Bois, Haycock, Gehan–George, Boyd, and Schlich formulas.
Body Type Calculator
Classify seven female fashion-industry body-shape categories from bust, waist, high-hip, and hip measurements and calculate waist-to-hip ratio.
Adult BMI Reference Weight Interval by Height
Translate the stated adult BMI reference boundaries into weights for an entered height.
Ideal Weight Calculator
Compare the Robinson, Miller, Devine, and Hamwi ideal-body-weight formulas and the healthy BMI weight range.
Lean Body Mass Calculator
Estimate lean body mass with Boer, James, and Hume adult equations or the Peters pediatric equation.
Compare a Weight with an Adult BMI Reference
Show the arithmetic difference from the tool’s stated adult BMI reference, without prescribing weight change.
Sleep Calculator
Calculate the best bedtimes to wake up feeling refreshed.
Frequently asked questions
How do I choose a tool from Body — Health and fitness?
Start with the quantity you need to solve for, then compare the required inputs and assumptions before entering values.
Are results in Body — Health and fitness guaranteed?
No. Read the formula, limitations and reference information on the individual calculator. Entered example rates are not current offers or professional advice.
Can I save a calculation from Body — Health and fitness?
The calculator pages support browser-local project and share controls. Shared links and exported files may contain your inputs.