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Injury Severity Score Calculator
Calculate Injury Severity Score (ISS) based on Abbreviated Injury Scale (AIS)
Trauma Guidelines: The Injury Severity Score (ISS) is scored by taking the highest AIS score from each of the 3 most severely injured body regions and summing their squares ($\text{ISS} = A^2 + B^2 + C^2$). An AIS score of 6 in any region automatically assigns an ISS of 75. Select AIS scores below.
Anatomical Region AIS Scores Input
Calculation Results
⚠️ Not medical advice. For trauma surgery, emergency medicine, and clinical reference only. Patient assessment, triage, and critical trauma management must be evaluated and supervised strictly by qualified trauma surgeons or physicians.