Golf Handicap Calculator
Calculate your golf handicap index and course handicap using the World Handicap System.
A golf handicap calculator computes your USGA Handicap Index from recent scores, letting you track improvement and compete fairly across different courses.
Examples
20 scores averaging ~89
Frequently Asked Questions
How many scores do I need?
What are course rating and slope rating?
Quick Tips
- •Enter at least 20 scores for the most accurate handicap; fewer scores use fewer differentials and may skew results.
- •Update your course rating and slope rating each time you play a different course.
- •Track your handicap trend over time to measure the effectiveness of your practice routine.
A golf handicap calculator computes your USGA Handicap Index from recent scores, letting you track improvement and compete fairly across different courses.
How to Use This Calculator
Enter your recent golf scores as comma-separated values (at least 5, ideally 20), along with the course rating and slope rating. The calculator computes your handicap index using the USGA differential method.
Understanding the Formula
Differential = (Score - Course Rating) x 113 / Slope Rating. Handicap Index = Average of best differentials (number used depends on total scores). With 20 scores, the best 8 differentials are averaged.
Examples
20 scores averaging ~89
With course rating 72.0 and slope 113, differentials average around 17.0 for the best 8, yielding a handicap index of approximately 17.0.
Frequently Asked Questions
How many scores do I need?
A minimum of 5 scores is required. The USGA uses up to 20 of your most recent scores. With 20 scores, the best 8 differentials are used for the calculation.
What are course rating and slope rating?
Course rating is the expected score for a scratch golfer on that course. Slope rating (55-155, with 113 as standard) measures the relative difficulty for a bogey golfer versus a scratch golfer. Both are printed on your scorecard.
Assumptions & Limitations
- Assumes all scores were played under standard rules on rated courses with valid slope and course ratings.
- The calculation uses a simplified USGA differential method; official handicaps require posting through a golf association.
- Scores should be adjusted for equitable stroke control (net double bogey) before entry for best accuracy.