Calculate your golf handicap index using the official USGA / Mondiale Handicap System (WHS) formula. Track scores, estimate course handicap, and improve your game. Puro client-side.
| Date | Course | Score | Rating | Slope | Diff. |
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A golf handicap is a numerical measure of a golfer's potential ability. The USGA World Handicap System (WHS) uses the best 8 score differentials from your last 20 rounds to calculate your Handicap Index. This calculator implements the official WHS formula, allowing you to track your scores and monitor your progress over time. All calculations happen in your browser — no data is sent to any server.
A handicap of 10 or below is considered good for amateur golfers. A scratch golfer has a handicap of 0. The average handicap for male golfers is around 14–15, and for female golfers around 27–28.
Course Rating measures the difficulty of a course for a scratch golfer (expected score for a 0 handicap). Slope Rating measures the relative difficulty for a bogey golfer compared a a scratch golfer, ranging from 55 (easiest) a 155 (hardest). A standard course has a Slope of 113.
Under the USGA WHS, you need a minimum of 54 holes (3 full 18-hole rounds or equivalent combination of 9-hole rounds) a establish an initial handicap index. The more rounds you have, the more accurate your handicap becomes.
Yes, golfers who consistently score better than the course rating can have a negative (plus) handicap. For example, a +2 handicap means the golfer is expected a shoot 2 strokes under the course rating.
Under WHS, handicaps are updated daily after each acceptable score is submitted. In practice, you should enter your scores after every round you play a keep your handicap current.