Body Surface Area Calculator
Estimate body surface area using the Mosteller formula.
Calculator updated
Use this page to get a quick answer, then check the formula and example before making an important decision.
- The main result from your inputs
- Formula used for the calculation
- Worked example and common mistakes
- Related calculators for the next step
Formula
BSA = square root of height × weight divided by 3600.
175 cm and 70 kg gives about 1.84 m².
Enter the measurements requested by the form and apply BSA = square root of height × weight divided by 3600.. Use consistent measurement conditions when comparing results over time.
Use the Body Surface Area Calculator as a general wellness or fitness estimate. It is not a diagnosis and should not replace professional medical advice.
Common health-calculation errors include inaccurate measurements, changing measurement conditions between checks, treating population formulas as diagnoses, and over-interpreting small differences.
Examples
Inputs
Weight (kg), Height (cm)
Keep units and time periods consistent.Formula
BSA = square root of height × weight divided by 3600.
Use the formula to verify the result.What the result means
Estimate body surface area using the Mosteller formula.
Change one input at a time to compare scenarios.How to Calculate Body Surface Area Manually
Start with the values requested in the form, keep the units consistent, and apply this formula: BSA = square root of height × weight divided by 3600.
The calculator above follows the same logic, then formats the answer so you can quickly compare inputs, copy the result, and check the related tools if your task has another step.
When to Use This Calculator
- Track a general wellness estimate
- Compare measurements over time
- Support fitness planning
- Prepare questions for a qualified professional
How It Works
- Enter Weight (kg), Height (cm).
- Use accurate, consistently taken measurements.
- Review the result as an estimate and read any limitations on the page.
Common Mistakes
- Using inaccurate measurements
- Changing measurement conditions
- Treating an estimate as a diagnosis
- Over-interpreting small changes
Related Calculators
More Body measurements tools
Continue the same workflow with closely related calculators.
Frequently Asked Questions
What does the Body Surface Area Calculator do?
Estimate body surface area using the Mosteller formula.
Is this result an estimate?
Yes. The calculator follows the formula shown on the page. Verify important decisions with a qualified professional where needed.
Can I use this on mobile?
Yes. The calculator is designed to work on phones, tablets, and desktop screens.