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Health Calculators

Adult BMI, calorie, basal metabolic rate, body-fat, and reference-weight calculators.

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Use these calculators for general adult screening and reference estimates. They do not diagnose conditions or replace individualized medical advice.

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Review common adult body-size estimates.

Calculate adult body mass index from height and weight.

Estimate adult body-fat percentage from body measurements using the U.S. Navy method.

Compare four historical adult reference-weight formulas based on height without treating them as a health target.

Estimate resting and daily energy use.

Estimate adult basal metabolic rate using the Mifflin-St Jeor equation.

Estimate adult daily energy use and inspect an optional arithmetic scenario using visible assumptions.

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Save the result, not just the tool

Save inputs, compare scenarios, export useful results, and return to your work from My Projects.