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About the Body Surface Area Calculator
The Body Surface Area Calculator estimates your total body surface area in square meters from your height and weight. You enter both values, and the tool returns a single BSA figure you can use for medication dosing references, burn assessment, or general health tracking.
The calculator uses the Mosteller formula: BSA equals the square root of height in centimeters multiplied by weight in kilograms, divided by 3600. This formula is widely used in clinical settings because it is simple and agrees closely with more complex methods. Measure your height without shoes and weigh yourself at a consistent time of day for a reliable result. If you need a BSA value for an actual prescription or treatment decision, consider confirming it with a healthcare professional.
- Enter your height in centimeters or inches.
- Enter your weight in kilograms or pounds.
- Read the BSA result in square meters from the output field.