Burn Surface Area (Rule of Nines) — free guideline decision tool
Estimate adult burn surface area (%TBSA) with the Wallace rule of nines.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
Common questions
What does Burn Surface Area (Rule of Nines) do?
Guide burn fluid resuscitation and burn-center referral.
How is the result calculated?
Head/neck 9, each arm 9, anterior/posterior trunk 18 each, each leg 18, perineum 1 (100% total). Count second-degree and deeper only.
Is this a substitute for clinical judgement?
No. All results are decision-support only, for licensed clinicians. They must be individualized to the whole patient and the latest guideline version.
Run Burn Surface Area (Rule of Nines) now
Estimate adult burn surface area (%TBSA) with the Wallace rule of nines.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.