Body Surface Area Calculator
Clinical Note: BSA is used to calculate drug doses, especially chemotherapy and other medications with narrow therapeutic windows.
Average BSA
Mosteller
DuBois
Haycock
Normal Adult Range
1.6 – 2.2 m²
Within normal range Below average Above average
1
Mosteller Formula: BSA = √(H × W / 3600)
BSA = √( × / 3600) = m²
2
DuBois Formula: BSA = 0.007184 × H^0.725 × W^0.425
BSA = 0.007184 × ^0.725 × ^0.425 = m²
3
Haycock Formula: BSA = 0.024265 × H^0.3964 × W^0.5378
BSA = 0.024265 × ^0.3964 × ^0.5378 = m²
4
Average BSA: ( + + ) / 3 = m²