This on-line BSA calculator takes your height and weight and calculates the body surface area in m2. You have the option to select the formula you want the BSA to be calculated.
There are several formulas to calculate human body surface area. The popular once are Du Bois and Mosteller. Body surface area is mainly used for clinical purposes like medicine dosage calculations, etc...
BSA = Wt0.425 x Ht0.725 x 0.007184
BSA = Wt0.5 x Ht0.5 x 0.016667
BSA = Wt0.5378 x Ht0.3964 x 0.024265
BSA = Wt0.51456 x Ht0.42246 x 0.0235
BSA = Wt(0.6157 - 0.0188 log10 Wt) x Ht0.3 x 0.0333
BSA = Wt0.444 x Ht0.663 x 0.008883
BSA = Wt0.425 x Ht0.725 x 0.007241
BSA for Women= Wt0.46 x Ht1.08 x 0.000975482
BSA for Men= Wt0.38 x Ht1.24 x 0.000579479
For all the above formulas: