170 cm, 70 kg
- Mosteller
- 1.8181186858 m2
- Du Bois
- 1.8097078018 m2
- Formula input
- height and weight
Body Surface Area Calculator
Use this free body surface area calculator to estimate BSA in square meters from height and weight.
Research-based formula Estimate limits shown Examples included Private history
Formula steps
- Mosteller BSA = square root of height in cm times weight in kg divided by 3600.
- Du Bois gives a second common estimate.
- Do not use this page for medication dosing decisions.
How to use the body surface area calculator
- Enter the requested measurements, dates, lab values, or workout details.
- Check that the units and formula assumptions match what the tool is asking for.
- Press the calculate button to see the answer, supporting metrics, and formula steps.
- Read the estimate with the health disclaimer in mind, then copy the result if you need it for notes.
Common uses
Estimate BSA from height and weight.
Compare Mosteller and Du Bois formulas.
Use as an educational clinical math reference.
Avoid using this page for medication dosing decisions.
Examples
BSA about 1.82 m2
BSA estimate
BSA estimate
Frequently asked questions
Quick answers about formulas, inputs, estimate limits, professional guidance, examples, and private in-browser history.
What can I use the Body Surface Area Calculator for?
Use it for quick educational estimates, planning, comparison, and trend checks. Health and fitness results should be interpreted with context, not as a diagnosis.
How does the Body Surface Area Calculator calculate the result?
The main result uses Mosteller: square root of height in cm times weight in kg divided by 3600. Du Bois is shown as a comparison.
Is this medical advice?
No. This page provides an educational estimate only. Talk with a qualified health professional before making medical, pregnancy, nutrition, medication, or safety decisions.
Are my health inputs private?
Yes. The calculator runs in your browser tab. Recent answers stay only on the page while you use it and are not sent to a server.