Calculator inputs

Estimate body surface area from height and weight.

Enter the height using the unit shown in the label.

Enter the weight using the unit shown in the label.

Controls rounding in the displayed result only; it does not change the underlying calculation.

Result
Enter values to begin

How this calculator works

This calculator applies the Du Bois body surface area formula.

Use this result as a planning estimate. Real lending, payroll, tax, health or construction outcomes can vary based on official rules, local costs and personal circumstances.

Formula

BSA = 0.007184 × height^0.725 × weight^0.425

Worked example

180 cm and 80 kg gives an estimated BSA of about 2.0 m².

Frequently asked questions

Why use this calculator?

It gives a fast estimate and helps compare related scenarios before moving to more detailed planning.

Is the result exact?

No. Treat it as a practical estimate and verify important numbers with official sources or qualified professionals.