Health
Body Surface Area Calculator
Translate height and weight into square meters of body surface area so you can size medications, IV fluids, or metabolic requirements with confidence.
Mosteller and Du Bois estimates used for medication dosing and metabolic calculations.
Mosteller & Du Bois
Mosteller: BSA = √[(height_cm × weight_kg) ÷ 3600]. Du Bois: BSA = 0.007184 × weight_kg^0.425 × height_cm^0.725. Both are listed so you can match hospital protocols.
How to use
- Choose metric or imperial inputs, then enter height and weight.
- Switch units as needed—the calculator converts to the centimeters/kilograms required by each formula.
- Read the Mosteller and Du Bois surface areas along with a sample mg/m² medication dose for quick context.
Example
Input: Height = 178 cm, Weight = 76 kg
Output: Mosteller BSA ≈ 1.94 m², Du Bois BSA ≈ 1.94 m², Dose @ 350 mg/m² ≈ 678 mg
Student-friendly breakdown
This walkthrough emphasizes the most searched ideas for Body Surface Area Calculator: body surface area calculator, bsa calculator, mosteller formula calculator, du bois bsa calculator. Start with the formula above, then follow the guided steps to double-check your work. For quick revision, highlight the givens, plug into the equation, and finish by verifying your units.
Need more support? Use the links below to open the long-form guide, browse additional examples, or hop into adjacent calculators within the same topic — each one is a quick way to double-check your work or handle a related question without starting from scratch.
Deep dive & study plan
Body Surface Area Calculator: Computes Mosteller and Du Bois BSA with quick dosing hints. It's built around bsa, body surface area, chemo dosing, so you can go from a raw question to a checked answer without switching tools.
The math behind it: Mosteller: BSA = √[(height_cm × weight_kg) ÷ 3600]. Du Bois: BSA = 0.007184 × weight_kg^0.425 × height_cm^0.725. Both are listed so you can match hospital protocols.
To use it well: (1) Choose metric or imperial inputs, then enter height and weight. (2) Switch units as needed—the calculator converts to the centimeters/kilograms required by each formula. (3) Read the Mosteller and Du Bois surface areas along with a sample mg/m² medication dose for quick context. Keep your units consistent as you go, and re-run a case you already know the answer to — it's the fastest way to catch a typo before it throws off a result you're relying on.
Worked example: entering Height = 178 cm, Weight = 76 kg returns Mosteller BSA ≈ 1.94 m², Du Bois BSA ≈ 1.94 m², Dose @ 350 mg/m² ≈ 678 mg. Try swapping in your own numbers next, especially a case you're unsure about, before you use this for something that matters.
Quick retention checklist
- Speak the formula aloud (or annotate it) so the relationships stick.
- Write each step in your own words and compare with the numbered list above.
- Swap in new numbers for the Example to make sure the calculator (and your logic) handles edge cases.
- Check at least one related calculator below — it's the fastest way to confirm your numbers still line up from a different angle.
FAQ & notes
Why give two BSA formulas?
Some hospitals prefer Mosteller while oncology orders often cite Du Bois. Having both lets you reconcile your paperwork instantly.
Can I type feet/inches or pounds?
Yes. Switch the units to imperial and the calculator converts everything to metric internally before running the formulas.
What formula does the Body Surface Area Calculator use?
Mosteller: BSA = √[(height_cm × weight_kg) ÷ 3600]. Du Bois: BSA = 0.007184 × weight_kg^0.425 × height_cm^0.725. Both are listed so you can match hospital protocols.
How do I use the Body Surface Area Calculator?
Choose metric or imperial inputs, then enter height and weight. Switch units as needed—the calculator converts to the centimeters/kilograms required by each formula. Read the Mosteller and Du Bois surface areas along with a sample mg/m² medication dose for quick context.