Enter your recent scores with each course's rating and slope. We'll work out a handicap estimate from your best recent rounds, the same math clubs use.
Add at least 3 rounds. For your most accurate estimate, post 20. Course rating and slope are printed on the scorecard or your course's tee sheet.
A handicap measures your demonstrated scoring ability rather than your average. The standard method looks at your recent rounds, keeps only your best performances, and expresses them as a single portable number that travels with you to any course.
The first step is turning each round into a Score Differential. This adjusts your gross score for how hard the course and tees actually played, using the tee's course rating and slope:
Once each round is a differential, your handicap estimate is the average of your lowest 8 differentials out of your most recent 20 rounds. Because only your best rounds count, the estimate reflects your potential, what you shoot when you play well, not your typical day.
Until you've posted 20 rounds, the system uses a sliding scale so newer golfers can still get a fair number. With fewer rounds, fewer differentials are averaged, and a small adjustment is applied:
| Rounds posted | Differentials used | Adjustment |
|---|---|---|
| 3 | Lowest 1 | −2.0 |
| 4 | Lowest 1 | −1.0 |
| 5 | Lowest 1 | 0 |
| 6 | Lowest 2 (average) | −1.0 |
| 7 – 8 | Lowest 2 | 0 |
| 9 – 11 | Lowest 3 | 0 |
| 12 – 14 | Lowest 4 | 0 |
| 15 – 16 | Lowest 5 | 0 |
| 17 – 18 | Lowest 6 | 0 |
| 19 | Lowest 7 | 0 |
| 20 | Lowest 8 | 0 |
This calculator applies that same table automatically. Add more rounds and watch the result tighten toward your true number.
You need a minimum of 3 rounds (54 holes) to establish a handicap estimate. It can be any combination of 18-hole and 9-hole rounds. The estimate becomes more accurate and stable as you approach 20 posted rounds.
Your handicap is portable and course-independent. Your course handicapis what you actually receive on a given day, your handicap converted for the specific tees you're playing, using their slope and rating. This tool estimates the portable number.
The maximum handicap under the standard method is 54.0, for both men and women. This keeps the game welcoming for beginners and higher-handicap players.
This calculator uses the standard formula so you can estimate your handicap, but a formal, recognized handicap must be issued through an authorized golf association or club, which applies extra safeguards such as daily conditions adjustments and caps.
For estimation purposes only. Ingrain is not a handicap authority and is not affiliated with any golf governing body or association. An official handicap must be obtained through an authorized provider.
Ingrain logs every round, tracks your scoring over time, and builds each practice session around the shots costing you most.