Golf Handicap Calculator
Estimate a handicap index from one round, course rating, and slope.
Quick answer: enter your details below and click Calculate Handicap — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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How to use
- Enter your adjusted gross score.
- Enter the course rating and slope.
- Click Calculate Handicap.
About this tool
Enter your adjusted gross score, the course rating, and the slope rating. The tool applies the standard differential formula. This is a simplified single-round estimate: an official handicap index uses the best 8 of your last 20 differentials, so treat this as a guide, not an official index.
Frequently asked questions
Is this my official handicap?
No. An official index averages your best 8 differentials from 20 rounds.
What does slope do?
Slope scales the differential: the same score counts more on a harder-rated course.