Calculate ISS from AIS scores across 6 body regions.
Enter the single highest AIS severity (from the AIS dictionary, coded by a trained rater) for each ISS body region. ISS describes anatomic injury burden and does not by itself predict an individual's outcome.
Get a personalized explanation of these results — what they actually mean for your situation, and how small changes would affect them.
No. Injury Severity Score is free, with no signup required, and nothing you enter leaves your browser.
Injury Severity Score is built on published formulas and reference ranges from established health sources. We revisit it periodically as guidance evolves; the "Last reviewed" date above shows when that last happened. If something looks wrong, tell us with the feedback button in the bottom-right corner.
No. Injury Severity Score gives you a general estimate based on the inputs you provide, not a diagnosis. Existing conditions, medications, and individual history all change what a number actually means for you. Treat this as a starting point for a conversation with a doctor or other qualified health professional, not a substitute for one.