Body surface area

BSA = √(height in cm × weight in kg / 3600), in square metres. Clinics use it for some drug doses. This page is not a prescription.

Weight

Height

Surface area

1.84

Mosteller is one of several formulas. Du Bois sits close for most adults.

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An educational estimate. Not medical, tax or credit advice.

Body mass index from weight and height, using the WHO bands for adults.

Devine ideal body weight from sex and height. A reference, not a goal you must hit.

The US Navy circumference method. A tape-measure estimate, not a DEXA scan.

Basal metabolic rate from Mifflin–St Jeor, then a TDEE estimate from activity.

A litres-per-day estimate from body weight and activity minutes.

Split a daily calorie target into grams of protein, carbohydrate and fat.