Body Surface Area Calculator

Calculate body surface area from height and weight using standard BSA estimation formulas.

Preparing Body Surface Area Calculator

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Input

Choose metric or imperial units, enter height and weight, and the calculator will estimate body surface area. This tool shows the result instantly without step-by-step output.

Input summary

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How to use Body Surface Area Calculator

Enter height and weight, and the calculator will estimate body surface area from those two measurements.

What this calculator is for

This calculator is for a common height-and-weight-based estimate that appears in some clinical, pharmacology, and nutrition contexts. It is a mathematical estimate of surface area, not a direct body scan or a full measure of health.

Tips

Body surface area depends on both height and weight, so update both values if you want a fresh estimate.
If the result is being used in a medical context such as dosing, the responsible clinician or pharmacist should make the final decision.
Keep the unit system consistent from start to finish so the estimate stays trustworthy.