Calculate your official golf handicap index using the World Handicap System formula — enter recent scorecards with course rating and slope rating.
Enter your figures and click Calculate to see your results.
Enter your adjusted gross scores with the course rating and slope rating for each round — at least one complete scorecard is required.
Press the Calculate button. All results appear instantly — no page reload, no waiting.
Results appear in the panel on the right with all key values clearly labelled. Use Copy to grab the result or Download to save a text file.
Yes — completely free with no sign-up required. All calculations run privately in your browser.
Results use standard mathematical formulas and are accurate to the precision displayed.
Yes — fully responsive and works on all devices including smartphones and tablets.
No — all calculations happen locally in your browser. Nothing is uploaded, logged or stored.
Yes — use the Download button after calculating to save a text file of all your results.
