Home
Back
Golf Handicap Index Formula:
| From: | To: |
The Golf Handicap Index Formula under the World Handicap System (WHS) calculates a player's potential ability based on their best 8 score differentials from their most recent 20 rounds. It provides a standardized measure of a golfer's playing ability.
The calculator uses the WHS 2024 formula:
Where:
Explanation: The formula takes the average of a player's best 8 score differentials from their last 20 rounds and applies a 96% adjustment factor to reflect potential ability rather than average performance.
Details: The Handicap Index allows golfers of different skill levels to compete fairly. It provides a consistent measure of a player's potential ability across different courses and conditions under the World Handicap System.
Tips: Enter at least 8 score differentials (one per line). The calculator will automatically select the best 8 (lowest values) and apply the WHS formula. Score differentials should be calculated considering course rating and slope.
Q1: How many scores are needed for a valid Handicap Index?
A: A minimum of 54 holes (three 18-hole scores or equivalent) are needed to establish a Handicap Index, but the full calculation requires at least 8 score differentials.
Q2: What is a score differential?
A: A score differential adjusts a player's gross score based on course rating and slope rating: (113 / Slope Rating) × (Adjusted Gross Score - Course Rating).
Q3: Why is there a 0.96 adjustment factor?
A: The 96% adjustment factor favors a player's potential ability rather than their average performance, making the handicap system more reflective of a player's best potential.
Q4: How often is the Handicap Index updated?
A: Under WHS, Handicap Indexes are updated daily (or after each round is posted) to reflect a player's current form.
Q5: What's the maximum Handicap Index?
A: The maximum Handicap Index is 54.0 for both men and women under the World Handicap System.