Everyday
Golf Handicap Differential Calculator
Calculate a score differential from adjusted gross score, course rating, slope rating, and playing-condition adjustment. The calculator uses score differential = (113 ÷ slope) × (adjusted score − course rating − PCC). It returns more than one result so you can check the main answer against a useful secondary measure. A lower differential represents a stronger round relative to course difficulty. Official handicap indexes use governing-body procedures, eligible scores, rounding, and a series of recent differentials.
Check the displayed units, assumptions, and rounding before relying on the result.
Calculate and compare
Use the number box for precision or the slider for fast scenario testing.
Scenario results
Score differential
13.8
Rounded to one decimal for display.
Score above course rating
15.6
Before slope and PCC adjustments.
Slope scaling factor
0.8828
113 divided by entered slope.
How the calculation works
Use consistent units and retain full precision until the final display step.
Worked example
Reproduce the displayed scenario, then change one assumption at a time.
Assumptions behind the result
- • Inputs use the units shown beside each control.
- • The displayed formula is applied without hidden market or demographic data.
- • Rounding occurs only for display; calculations keep full numeric precision.
- • A lower differential represents a stronger round relative to course difficulty.
- • Official handicap indexes use governing-body procedures, eligible scores, rounding, and a series of recent differentials.
Mistakes that change the answer
- • Mixing percentages with decimals or mixing incompatible units.
- • Relying on a rounded intermediate value instead of the full result.
- • Changing several assumptions at once instead of testing adjusted gross score separately.