BSA Calculator
A professional tool for calculating Body Surface Area (BSA) using clinically validated formulas for medical and health assessments.
Enter your details to calculate your BSA.
Average adult male: 1.9 m²
Average adult female: 1.6 m²
Understanding Body Surface Area (BSA)
Body Surface Area (BSA) is the measured or calculated surface area of a human body. For many clinical purposes, BSA is a better indicator of metabolic mass than body weight because it is less affected by abnormal body fat.
💊 Medication Dosing
BSA is widely used in oncology to determine the correct dosage for chemotherapy and other drugs with a narrow therapeutic index.
🫀 Cardiac Index
Doctors use BSA to calculate the cardiac index, which relates a person’s heart performance to their specific body size.
🔥 Burn Assessment
In emergency medicine, BSA is critical for assessing the severity of burns and determining fluid resuscitation requirements.
| Group | Average BSA (m²) | Average BSA (ft²) |
|---|---|---|
| Newborn | 0.25 m² | 2.69 ft² |
| Child (9 years) | 1.07 m² | 11.52 ft² |
| Adult Female | 1.60 m² | 17.22 ft² |
| Adult Male | 1.90 m² | 20.45 ft² |