Loading the page...
Preparing tools and content for you. This usually takes a second.
Preparing tools and content for you. This usually takes a second.
Fetching calculator categories and tools for this section.
Estimate your handicap index using recent scores, course rating, and slope rating. This free calculator helps golfers track scoring consistency, compare rounds, and plan improvement goals with a simple differential-based method.
Last updated: April 17, 2026
Need a custom sports or coaching calculator? Get a Quote
Include 3 to 20 recent adjusted gross scores for best results.
Handicap Index
11.3
Avg Differential
11.30
Scores Entered:
8
Low Index Target (85%):
9.6
Best Differentials Used:
11.30
Handicap Tips:
Formula
(Score - Rating) * 113 / Slope
Best of recent rounds
1 to 8 differentials
Performance planning
Index + improvement target
Example scores on a course rated 71.2 with slope 128 can produce an estimated handicap index near:
11.3
The calculator converts each score to a differential, ranks the differentials from lowest to highest, then averages the best set based on the number of rounds entered. This creates a stable handicap estimate that you can use for training goals and round-by-round tracking.
Differential = (Score - Course Rating) * 113 / Slope RatingLower differentials represent stronger relative performance. The final index is a rounded average of your best recent differentials.
Differential average from best eligible rounds:
11.30
Estimated handicap index: 11.3
Share it with golfers who want a faster way to track handicap progress.
Suggested hashtags: #Golf #Handicap #Sports #Calculator #Performance