Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Medicine
BMI & Body Fat Calculator
Calculate your BMI and estimated body fat percentage using your weight, height, age, and gender. Use it to screen for underweight, overweight, or obesity and understand your health risk category.
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 & Body Fat Calculator | Body Surface Area Calculator | |
|---|---|---|
| Category | Medicine | Medicine |
| Inputs required | 2 | 3 |
| Result | BMI | Body Surface Area (m²) |
| What it does | Calculate your BMI and estimated body fat percentage using your weight, height, age, and gender. Use it to screen for underweight, overweight, or obesity and understand your health risk category. | 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. |