Body Surface Area
Estimate body surface area with the Mosteller formula.
Your numbers
Estimated surface area
Mosteller approximation for educational comparison. Never use this page to determine medication or chemotherapy doses.
Health inputs stay in this tab. Link sharing is disabled.
Scenario comparison
Up to three snapshots in this tab. Loading one replaces the current inputs.
Formula
Use BSA = √(HW/3600). H is height in cm and W is body mass in kg. The Mosteller estimate is in m².
Estimate body surface area with the Mosteller formula.
Worked example
- Body mass (kg)
- 75
- Height (cm)
- 180
- Estimated surface area
- 1.93649 m²
Scope and limitations
Mosteller approximation for educational comparison. Never use this page to determine medication or chemotherapy doses.
Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.
Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.
Formula version: 71a84735b577 · Example checked: