Use the figures on the left to estimate burn size as a percentage of total body surface area (TBSA) in adults and children. This percentage is then entered into the Parkland formula to calculate the fluid requirements in acute burn patients:

Fluid requirements (mL) = TBSA burned (%) x weight (kg) x 4 mL

Give 1/2 of total requirements in first 8 hours, and then give second half over next 16 hours