Calculate body surface area (BSA) using both the Mosteller and Du Bois formulas. Supports metric and imperial units for height and weight inputs.
BSA (Mosteller)
1.82 m²
BSA (Du Bois)
1.81 m²
Average adult BSA is approximately 1.7 m² (female) to 1.9 m² (male).
Avg. Female
~1.7 m²
Avg. Male
~1.9 m²
Shading intensity represents relative body surface area
For educational reference only. Always verify with current prescribing guidelines.
Carboplatin (AUC 5-6)
Uses GFR, not directly BSA
Cisplatin
75-100 mg/m² per cycle
Doxorubicin
60-75 mg/m² per cycle
5-Fluorouracil
500-600 mg/m² per cycle
Paclitaxel
135-175 mg/m² per cycle
Body surface area (BSA) is a measurement of the total surface area of the human body. In clinical medicine, BSA is considered a better indicator of metabolic mass than body weight because it is less affected by abnormal adipose mass. It is the standard basis for dosing many chemotherapy agents and is used to calculate the cardiac index, a key hemodynamic parameter in critical care.
BSA is used to calculate chemotherapy dosages, determine cardiac index (cardiac output ÷ BSA), guide fluid resuscitation in burn patients, and dose certain medications. It provides a more accurate basis for dosing than weight alone because it better correlates with metabolic rate.
The Mosteller formula (√[height × weight / 3600]) is simpler and commonly used in clinical practice. The Du Bois formula (0.007184 × height^0.725 × weight^0.425) is the original 1916 formula. Both produce very similar results and are clinically interchangeable.
Average adult BSA is approximately 1.7 m² for females and 1.9 m² for males. Newborns have a BSA of about 0.25 m². BSA varies with height and weight and is used as a more individualized metric than fixed dosing.
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