Enter your recent rounds (score, course rating, slope).
0.0 handicap index
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Rounds used
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Best differential
Simplified estimate: averages your best differentials × 0.96. Official handicaps use the full World Handicap System.
Frequently Asked Questions
How is a golf handicap calculated?
Each round gives a score differential = (score − course rating) × 113 ÷ slope. Your handicap index is based on the average of your best differentials (multiplied by 0.96 in the older system). This tool gives a simplified estimate.
Estimate your golf handicap index from your recent scores, course ratings and slopes.