Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Medicine
BMI and Body Fat Calculator
Computes your BMI and estimates body fat percentage from weight, height, age, and sex. Useful for health screenings, fitness goal-setting, and understanding whether your weight is proportionate for your frame.
Fill in the required fields to see your result.
Medicine
Body Surface Area Calculator
Calculate body surface area (BSA) in m² using the Mosteller, Du Bois or Haycock formula from your weight and height. Clinicians use BSA to dose chemotherapy, normalise cardiac index and estimate burn coverage.
Fill in the required fields to see your result.
Key differences
| BMI and Body Fat Calculator | Body Surface Area Calculator | |
|---|---|---|
| Category | Medicine | Medicine |
| Inputs required | 4 | 3 |
| Result | BMI + Body Fat % | Body Surface Area (m²) |
| What it does | Computes your BMI and estimates body fat percentage from weight, height, age, and sex. Useful for health screenings, fitness goal-setting, and understanding whether your weight is proportionate for your frame. | Calculate body surface area (BSA) in m² using the Mosteller, Du Bois or Haycock formula from your weight and height. Clinicians use BSA to dose chemotherapy, normalise cardiac index and estimate burn coverage. |