Injury Severity Score Calculator
Calculate Injury Severity Score (ISS) and New ISS (NISS) for trauma patients using Abbreviated Injury Scale (AIS) scores.
Important Health Disclaimer
This calculator provides general health information based on standard medical formulas and WHO guidelines. Results are for informational and educational purposes only and should not be considered as professional medical advice, diagnosis, or treatment recommendations.
For health concerns, medical conditions, fitness plans, or dietary decisions, please consult with qualified healthcare professionals, licensed physicians, registered dietitians, or certified fitness trainers who can evaluate your individual health status and medical history.
Individual health needs vary significantly. These calculations are general estimates and may not be appropriate for everyone, especially those with existing medical conditions, pregnant women, children, or elderly individuals.
Not a substitute for professional medical advice
AIS Scores by Body Region
Injury Severity Score
0
No Injury
Mortality Risk: < 1%
ISS
0
/75
NISS
0
/75
TRISS Ps
100.0%
survival
ISS Calculation
Top 3 scores: 0, 0, 0
ISS = 0² + 0² + 0² = 0
Interpretation
No significant injuries identified.
ISS Severity Categories
1-8: Minor
9-15: Moderate
16-24: Serious (major trauma >15)
25-40: Severe
41-75: Critical
Disclaimer: The ISS requires proper AIS coding by trained personnel. Mortality estimates are population-based and individual outcomes may vary. Always use clinical judgment in trauma management decisions.
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sources
- •World Health Organization (WHO) — Global health metrics, disease classification, and nutritional standards. who.int
- •Centers for Disease Control and Prevention (CDC) — Health statistics, BMI guidelines, and disease prevention data. cdc.gov
- •National Institutes of Health (NIH) — Medical research, clinical guidelines, and health calculators. nih.gov
- •Mayo Clinic — Clinical health information, disease reference, and wellness guidance. mayoclinic.org
For a complete list of all references used across the site, visit our full sources page.
Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
Formula Source: WHO Health Metrics Standards
by World Health Organization