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Body Surface Area CalculatorTotal Body Surface Area
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TBSA burns
You can quickly estimate the total body surface area of a burn by using the "rule of nines" in adults.In babies and young children, different percentages are used because the ratio of the combined surface area of the head and neck to the surface area of the limbs is typically larger in children than that of an adult(See  table below).
Burn  percentage in adults: Rule of nines
A method of estimating the extent of body surface that has been burned in an adult, dividing the body into sections of 9 per cent or multiples of 9 per cent.



                                    Adults
Anatomic structure Surface area
Anterior Head 4.5%
Posterior Head 4.5%
Anterior torso 18%
Posterior torso 18%
Each Anterior arm 4.5%
Each Posterior arm 4.5%
Each Anterior leg 9%
Each Posterior leg 9%
Genitalia/perineum 1%

Burn percentage in children and Infants
For children and infants, the Lund-Browder chart is used to assess the burned body surface area.
                              Children

Anatomic structure Surface area
Anterior Head 8.5%
Posterior Head 8.5%
Anterior torso 18%
Posterior torso 18%
Each Anterior arm 4.5%
Each Posterior arm 4.5%
Each Anterior leg 6.5%
Each Posterior leg 6.5%
Genitalia/perineum 1%

                         Infants<10kg
Anatomic structure Surface area
Head and neck 20%
Anterior torso 16%
Posterior torso 16%
Each leg 16%
Each arm 8%
Genitalia/perineum 1%

Rule of palms
The surface of the patient's palm represents approximatley 1% of body surface area and is helpful in estimating the area of small burns.
Parkland formula
The Parkland Formula gives you the calculation you need to know how much fluids to give to patient.
V ( fluids volume)= total body surface area of burn (%) x weight (kg) x 4



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