Body Surface Area Calculator
Calculate your body surface area easily with our free online tool, suitable for medical professionals and researchers requiring precise measurements.

Check It Yourself
About This Tool
This Body Surface Area (BSA) calculator provides a quick and accurate estimate of a patient's body surface area based on height and weight inputs. It supports common formulas like Mosteller and Dubois for flexible use in clinical settings. Users such as healthcare providers, researchers, and students can utilize this tool for medication dosing, body composition analysis, and other medical assessments.
The calculator features a simple, intuitive form with unit options for metric and imperial measurements, ensuring versatility across regions. Results are displayed prominently, with options for copy and export, streamlining medical workflows. Additional features include input validation to prevent errors, real-time calculations, and optional history tracking for ongoing comparisons.
Designed for responsiveness and accessibility, the tool guarantees ease of use on desktops and mobile devices. Emphasizing clarity and simplicity, it supports multiple language preferences and includes helpful tooltips explaining formulas and units. Whether used in clinics, research labs, or educational settings, this BSA calculator helps improve measurement accuracy and operational efficiency.
How to Use
1. Enter the patient's height in centimeters or inches.
2. Enter the patient's weight in kilograms or pounds.
3. Select the measurement units and preferred formula.
4. Click 'Calculate' or view results automatically if live calculation is enabled.
5. Review the BSA result, copy for records, or export if needed.

FAQs/Additional Resources
Find Quick Answers
What is Body Surface Area used for?
Which formulas does the calculator support?
Can I use imperial units?
Is the calculation accurate for all ages?
Can I save or export results?
What if I enter invalid data?
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