Health & Fitness
Body Surface Area Calculator
Estimate body surface area using the Mosteller formula, used for drug dosing and clinical assessment.
Preparing your result…
What this calculator does
Calculates Body Surface Area Calculator using the formula verified against the cited source.
What your result means
An estimate from the inputs you enter, within the scope stated below — not advice.
Formula
BSA (m²) = √(height(cm) × weight(kg) ÷ 3600)
The step-by-step working for your own numbers appears with the result above and in the PDF report.
Frequently asked questions
Symbols and assumptions
- Inputs
- The values entered in the fields above
- • Mosteller BSA in m²=sqrt(height cm×weight kg/3600). Explicitly convert other units before applying the formula.
Sources and review
Reviewed 2026-10-18 · Next review 2027-04-18
- • Require positive height/weight and label Mosteller. BSA is an estimate with population/size-dependent error; medication doses must follow the specific drug protocol rather than being inferred from BSA alone.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Quick reference
| Scenario | Height (cm) | Weight (kg) | Body surface area |
|---|---|---|---|
| Worked example | 175 | 70 | 1.8447 m² |
| Half the amounts | 88 | 35 | 0.925 m² |
| Double the amounts | 230 | 140 | 2.9907 m² |
Need the full picture? Get the detailed PDF report with charts, tables, formulas and working steps.
Reviewed 2026-10-18 · Next review 2027-04-18
Report a mistake or request an improvement
Tell us if a formula, unit, explanation, or result needs attention. Your message will include this calculator’s name and page.
Related calculators
A Body Shape Index (ABSI) Calculator
Calculate ABSI, which isolates abdominal adiposity from overall body size.
BMI Calculator
Estimate body mass index from height and weight.
Body Fat 3-Site Skinfold Calculator
Estimate body fat from three Jackson-Pollock caliper sites and age.
Body Fat 7-Site Skinfold Calculator
Estimate body fat from the full seven-site Jackson-Pollock caliper protocol.
Body Fat US Navy Method Calculator
Estimate body fat percentage from neck, waist and hip girths using the US Navy tape method.
Fat-Free Mass Index Calculator
Calculate FFMI and compare it with the commonly cited natural muscular limit.
Namaste! Did this Body Surface Area Calculator help you?
Aapka ek click humein behtar banata hai. Just tap a star, no sign-in, no typing.