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Handicap Index Formula:
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The Handicap Index (HI) is a measure of a golfer's potential ability under the World Handicap System (WHS). It represents the number of strokes a player receives to adjust their score to the level of a scratch golfer.
The calculator uses the WHS formula:
Where:
Explanation: The system takes your best 8 score differentials from your most recent 20 rounds, averages them, and applies a 0.96 multiplier to calculate your handicap index.
Details: The handicap index allows golfers of different abilities to compete fairly. It's used worldwide under the WHS to ensure consistent handicap calculation across different courses and conditions.
Tips: Enter your score differentials as comma-separated values. The calculator will automatically select the best 8 scores and apply the WHS formula. You need at least 8 score differentials for an accurate calculation.
Q1: What is a Score Differential?
A: A Score Differential measures your performance relative to the course rating and slope. It's calculated as: (113 / Slope Rating) × (Adjusted Gross Score - Course Rating - PCC adjustment).
Q2: Why use the best 8 out of 20 rounds?
A: This system provides a consistent measure of your potential ability by focusing on your better performances while allowing for occasional poor rounds.
Q3: What is the 0.96 multiplier for?
A: The "Bonus for Excellence" multiplier slightly reduces the handicap index, encouraging improvement and ensuring handicaps reflect potential rather than average ability.
Q4: How often should I update my handicap?
A: Under WHS, handicaps are updated daily as new scores are submitted. You should add new score differentials after each qualifying round.
Q5: What's the difference between Handicap Index and Course Handicap?
A: Handicap Index is your base handicap. Course Handicap is calculated from your Handicap Index and the specific course's Slope Rating for the tees you're playing.