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rule of nines for burns

body divided into areas showing percentages of surface area.

the size of a burn can be quickly estimated by using the "rule of nines." this method divides the body's surface area into percentages.

  • the front and back of the head and neck equal 9% of the body's surface area.
  • the front and back of each arm and hand equal 9% of the body's surface area.
  • the chest equals 9% and the stomach equals 9% of the body's surface area.
  • the upper back equals 9% and the lower back equals 9% of the body's surface area.
  • the front and back of each leg and foot equal 18% of the body's surface area.
  • the genital area equals 1% of the body's surface area.

current as of: november 16, 2023

author: healthwise staff
clinical review board
all healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

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