Health & Fitness
Wells Score for Pulmonary Embolism
Score clinical probability of pulmonary embolism using the Wells criteria.
Preparing your result…
What this calculator does
Calculates Wells Score for Pulmonary Embolism using the formula verified against the cited source.
What your result means
An estimate from the inputs you enter, within the scope stated below — not advice.
Formula
Sum of weighted Wells criteria; ≤4 PE unlikely, >4 PE likely
The step-by-step working for your own numbers appears with the result above and in the PDF report.
Frequently asked questions
Symbols and assumptions
- Inputs
- The values entered in the fields above
- • Two-level PE Wells score: DVT signs 3; PE more likely than alternative 3; HR>100 1.5; immobilization>3 days or surgery in previous4 weeks 1.5; prior DVT/PE 1.5; hemoptysis1; malignancy treatment/current/last6 months or palliative1. Sum≤4 PE unlikely; >4 PE likely.
Sources and review
Reviewed 2026-10-18 · Next review 2027-04-18
- • NICE NG158 Table 2 supplies weights and definitions. Max12.5. Preserve the clinical judgment criterion and exact time windows. “Unlikely” is not “excluded”; subsequent testing follows the clinical pathway. Do not substitute three-level cutoffs or use as self-diagnosis.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Quick reference
| Scenario | Wells PE score |
|---|---|
| Worked example | 6 — Moderate probability |
Need the full picture? Get the detailed PDF report with charts, tables, formulas and working steps.
Reviewed 2026-10-18 · Next review 2027-04-18
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