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Handicap Index Formula:
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The Handicap Index is a measure of a golfer's potential ability calculated from the best 8 Score Differentials out of their most recent 20 scores. It allows golfers of different skill levels to compete fairly.
The calculator uses the World Handicap System formula:
Where:
Explanation: The system takes your best 8 Score Differentials from your last 20 rounds, averages them, and applies a 96% multiplier to emphasize your potential ability rather than average performance.
Details: The Handicap Index provides a standardized measure of a golfer's ability that can be used worldwide. It enables fair competition between golfers of different skill levels and helps track improvement over time.
Tips: Enter at least 8 Score Differentials (one per line). The calculator will automatically select the best 8 (lowest values) and compute your Handicap Index. For official handicaps, you need a minimum of 54 holes (3 rounds) of golf.
Q1: What is a Score Differential?
A: Score Differential measures your performance relative to the course difficulty. It's calculated as: (Adjusted Gross Score - Course Rating) × 113 ÷ Slope Rating.
Q2: Why use the best 8 out of 20?
A: This system focuses on your potential ability rather than average performance, rewarding consistency and peak performance.
Q3: What does the 0.96 multiplier do?
A: The "Bonus for Excellence" multiplier slightly reduces the handicap, encouraging improvement and ensuring handicaps reflect potential rather than average ability.
Q4: How often should I update my handicap?
A: Handicaps should be updated after each round. Most golf associations provide daily handicap revisions based on newly submitted scores.
Q5: What's a good Handicap Index?
A: Scratch golfers have handicaps near 0. Beginners typically start around 25-30. Professional golfers often have handicaps of +4 to +6 (better than scratch).