Your Handicap Index is the average of your best 8 of your last 20 differentials.
How to use the Golf Handicap Differential Calculator
- Adjusted gross score
- Course rating
- Slope rating
- Playing conditions adjustment
Results update as you type, and every field accepts the units shown in its menu.
How it works
Subtract the course rating (and any playing conditions adjustment) from your score and scale by 113 ÷ slope.
Inputs explained
| Field | What to enter |
|---|---|
| Adjusted gross score | A number |
| Course rating | A number |
| Slope rating | A number |
| Playing conditions adjustment | A number |
Example values
How the main result changes when Adjusted gross score changes and everything else stays at the example values above:
| Adjusted gross score | Score differential |
|---|---|
| 44 | -24 |
| 66 | -4.6 |
| 88 | 14.8 |
| 110 | 34.3 |
| 132 | 53.7 |
| 176 | 92.5 |
Formula
Differential = (113 ÷ slope) × (adjusted score − course rating − PCC)Worked example
Inputs — Adjusted gross score: 88; Course rating: 71.2; Slope rating: 128; Playing conditions adjustment: 0.
Results — Score differential = 14.8.
Frequently asked questions
What is an adjusted gross score?
Your score after limiting each hole to net double bogey.
What is a standard slope?
113 is the slope of a course of average difficulty.
What formula does the Golf Handicap Differential Calculator use?
Differential = (113 ÷ slope) × (adjusted score − course rating − PCC).