Duke Score

minutes
mm
Health

Duke Score is a fast, free health calculator. Enter Maximum Exercise Time (minutes), ST-Segment Deviation (mm) and Angina Type During Exercise to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser.

Formula

Duke Score = Exercise Time - (5 × ST Deviation) - (4 × Angina)
  • Higher score = lower risk
  • ST deviation and angina worsen prognosis
  • Exercise time extends survival
  • Score < -10 indicates high risk

Treadmill Test

Inputs
  • Maximum Exercise Time (minutes): 6 minutes
  • ST-Segment Deviation (mm): 0 mm
  • Angina Type During Exercise: 0

A patient exercising for 6 minutes without ST deviation or angina has Duke Score=6 (Low Risk, 0.5% 5-year mortality).

Frequently asked questions

What is Duke Treadmill Score?
A tool to predict coronary artery disease risk based on treadmill stress test results including exercise capacity, ST changes, and angina.
What are ST changes?
ST-segment depression on ECG during exercise may indicate reduced blood flow to heart muscle, suggesting CAD.