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Triage Priority Score Calculator

Work out triage priority score instantly with clear inputs, formula shown and shareable results.

About Triage Priority Score Calculator

Follows the Emergency Severity Index algorithm: life-saving need gives level 1, high risk gives level 2, then the expected number of resources and danger zone vital signs decide levels 3 to 5.

Formula

Emergency Severity Index v4

Level 1 immediate life-saving intervention; level 2 high risk, confusion, lethargy or severe pain; level 3 two or more resources; level 4 one resource; level 5 none. Danger zone vital signs upgrade level 3 to level 2

Worked example

With the default values below, Triage Priority Score Calculator returns Emergency Severity Index level of 2. Change any input above and every figure here is recalculated in your browser.

Inputs used

Needs an immediate life-saving interventionone of Yes, No
No
High risk situation, confusion, lethargy or severe painone of Yes, No
Yes
Number of resources expectedaccepts 0–8
2
Vital signs outside the danger zone limitsone of Yes, No
No

Results

Emergency Severity Index level
2
Target time to be seen
10 min
Basis for the level
High risk presentation
Priority label
Immediate or very urgent

Step by step

  1. 1Values used
  2. 2Emergency Severity Index v4
  3. 3Emergency Severity Index level= 2
  4. 4Target time to be seen= 10 min
  5. 5Basis for the level= High risk presentation
  6. 6Priority label= Immediate or very urgent

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to whole numbers, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
  • This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.

Frequently Asked Questions

Are the target times fixed?

No. Target times vary by system; the level itself is what the index defines.

Do vital signs alone set the level?

Only through the danger zone step, which can upgrade a level 3 patient to level 2.

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