Free Tool
Golf Handicap Calculator
Enter up to 20 rounds below. Fill in your score, the course rating, and slope rating for each round, then click Calculate.
Your Rounds
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How Is a Golf Handicap Calculated?
The USGA Handicap Index uses your score differentials to measure your potential ability. A score differential is calculated as:
Differential = (Score − Course Rating) × 113 / Slope Rating
The system takes your most recent rounds (up to 20), selects the best differentials according to the USGA table, averages them, and multiplies by 0.96.
A handicap becomes official once you have at least 10 rounds on record with course rating and slope rating data. Find the slope and course rating for any course on its course page.