Body Surface Area (BSA) Calculator

Calculate your body surface area, which is useful for medical dosing calculations, especially in treatments like chemotherapy. Use our Body Surface Area Calculator to find accurate BSA values for adults and children using weight, height, or pediatric-specific formulas. Includes oncology BSA tools for chemotherapy dosing, detailed charts, and BMI calculator integration for comprehensive health assessment.

Body Surface Area (BSA)

Body Surface Area refers to the total skin area of the human body and is one of the main measurements doctors use in medicine. Body surface area measurement helps determine accurate dosages of drugs. BSA shows metabolic mass more accurately than body weight.

What Is Body Surface Area?

Body Surface Area is the total skin area of the body of a person. It is used in medicine to calculate the accurate dosages of a drug for a patient, especially for chemotherapy treatment. This measurement is also used to determine fluid requirements administered intravenously.

How Body Surface Area Is Calculated?

There are a number of equations you can use to calculate the body surface area.

DuBois & DuBois

BSA(m2) = 0.007184 × Height(cm)0.725 × Weight(kg)0.425

Gehan & George

BSA(m2) = 0.0235 × Height(cm)0.42246 × Weight(kg)0.51456

Haycock et al.

BSA(m2) = 0.024265 × Height(cm)0.3964 × Weight(kg)0.5378

Mosteller

BSA(m2) = SQR RT ([Height(cm) × Weight(kg)]/ 3600)

Average Value Of Body Surface Area

The average value of body surface area is 1.7 m⊃2;. Here is the average value of the body surface area of men and women.

• For adult men = 1.9 m⊃2;
• For adult women = 1.6 m⊃2;
• For newborns = 0.25 m⊃2;

Mean Body Surface Area By Age

Here is the mean body surface area of males and females by age.

Mean body surface area of males by age

Mean body surface area of females by age