Golf Handicap Calculator (World Handicap System Differential and Course Handicap)
The score differential of a round and the course handicap for a tee, using the World Handicap System formulas with the course rating and slope.
Results
The dashed line marks the value you entered.
What this tool does
A round's score differential is 113 ÷ slope × (adjusted gross score − course rating − the playing-conditions adjustment): 113 is the slope of a course of standard difficulty, so a hard course shrinks the number. Your handicap index is the average of the best 8 of your last 20 differentials. To play a particular tee, convert the index to a course handicap: index × slope ÷ 113 + (course rating − par), rounded. Federations then apply an allowance depending on the format, which this tool does not.
Formula
score differential = 113 ÷ slope × (adjusted gross − course rating − PCC) · course handicap = index × slope ÷ 113 + (course rating − par)
Variables
| Symbol | Meaning | Unit |
|---|---|---|
ags | Adjusted gross score | — |
cr | Course rating | — |
sl | Slope rating | — |
pr | Par of the course | — |
hi | Your handicap index | — |
pc | Playing conditions adjustment (PCC) | — |
SD | Score differential | — |
CH | Course handicap | — |
NT | Net score | — |
Worked example
- Adjusted gross score92
- Course rating71.2
- Slope rating125
- Par of the course72
- Your handicap index14.3
- Playing conditions adjustment (PCC)0
- Score differential18.8
- Course handicap15
- Net score77
Limitations
- The default values are typical reference figures, not measurements of your situation. Replace them with your own data whenever you have it.
- The calculation runs at full precision and only the display is rounded. If you copy an intermediate value and retype it, small differences can appear.