How Is The New Golf Handicap Index Calculated

World Handicap System (WHS) Formula:

\[ HI = \frac{\text{Sum Best 8 SD}}{8} \times 0.96 \]

Handicap Index (HI):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the World Handicap System (WHS)?

The World Handicap System (WHS) is a unified handicap system used globally to allow golfers of different abilities to play and compete on a fair basis. It replaced various national systems to create consistency worldwide.

2. How Does the Handicap Index Calculation Work?

The Handicap Index is calculated using the following WHS formula:

\[ HI = \frac{\text{Sum of Best 8 Score Differentials}}{8} \times 0.96 \]

Where:

\( HI \) — Handicap Index (unitless)
\( SD \) — Score Differential (unitless)
Best 8 — The 8 best score differentials from your most recent 20 rounds
0.96 — Bonus for Excellence multiplier

Explanation: The system uses your best 8 score differentials from your last 20 rounds. If you have fewer than 20 rounds, it uses the available number of scores (minimum 3).

3. Importance of Handicap Index in Golf

Details: The Handicap Index provides a standardized measure of a player's potential ability, allowing golfers of different skill levels to compete equitably. It's updated daily to reflect current form.

4. Using the Calculator

Tips: Enter your score differentials (one per line). The calculator will automatically select your best scores based on WHS rules. You need at least 3 score differentials to calculate a valid Handicap Index.

5. Frequently Asked Questions (FAQ)

Q1: What is a Score Differential?
A: Score Differential is calculated from your gross score, adjusted for course rating and slope rating. It represents your performance relative to the course difficulty.

Q2: Why use only the best 8 of 20 scores?
A: This focuses on your potential ability rather than average performance, rewarding consistency and peak performances.

Q3: What is the purpose of the 0.96 multiplier?
A: The "Bonus for Excellence" multiplier slightly reduces the handicap index, encouraging improvement and ensuring handicaps represent potential rather than average ability.

Q4: How often is the Handicap Index updated?
A: Under WHS, handicaps are updated daily after each acceptable score is submitted.

Q5: What if I have fewer than 20 scores?
A: The system uses the available number of scores: 3 scores use best 1, 4 scores use best 1, 5 scores use best 1, 6 scores use best 2, etc., up to 20 scores using best 8.