justyourcalculatorGolf Handicap Calculator
Your Handicap Index from recent rounds, WHS style.
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Golf Handicap Calculator
Handicap Index and course handicap (World Handicap System)
Handicap Index
15.5
Average of the best 2 of your last 8 differentials
- Rounds used
- 2 of 8
- Lowest differential
- 15.0
- Average of those used
- 15.45
World Handicap System: fewer than 20 scores use fewer differentials (3 scores: lowest 1 minus 2.0). Playing conditions (PCC), the 12-month low cap and exceptional-score reductions are not applied. Max index 54.0.
How it was calculated
- Score differential = (113 / slope) × (adjusted score - course rating)
- Round 1: (113 / 128) × (92 - 71.8) = 17.8
- Round 2: (113 / 125) × (88 - 70.4) = 15.9
- Round 3: (113 / 131) × (95 - 72.3) = 19.6
| Round | Score | Rating | Slope | Differential | Counts |
|---|---|---|---|---|---|
| 1 | 92 | 71.8 | 128 | 17.8 | |
| 2 | 88 | 70.4 | 125 | 15.9 | Yes |
| 3 | 95 | 72.3 | 131 | 19.6 | |
| 4 | 86 | 69.9 | 121 | 15.0 | Yes |
| 5 | 90 | 71.8 | 128 | 16.1 | |
| 6 | 89 | 70.4 | 125 | 16.8 | |
| 7 | 93 | 72.3 | 131 | 17.9 | |
| 8 | 87 | 69.9 | 121 | 16.0 |
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How the golf handicap calculator works
Each round becomes a score differential: (113 / slope rating) × (adjusted gross score - course rating). 113 is the slope of a course of average difficulty.
Your Handicap Index is the average of the lowest 8 of your most recent 20 differentials. With fewer rounds, the WHS uses fewer differentials, with a small adjustment for 3, 4 and 6 rounds.
Course handicap converts the index to strokes on a specific set of tees: index × slope / 113 + (course rating - par).
Using and checking your result
Published by JustYourCalculator. Check the units and assumptions above, and compare a known example before relying on the output. Calculations use browser arithmetic and may round displayed values.
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