Golf Handicap Calculator
Enter gross score, course rating and slope rating to compute the handicap differential.
Input Data
Results
18
At a glance:Differential = (Gross Score − Course Rating) × 113 ÷ Slope Rating. 113 is the standard (neutral) slope.
Formula
differential = (grossScore − courseRating) × 113 ÷ slopeRating.
How to Use
- Enter the round's gross score, course rating and slope rating.
- Get the handicap differential instantly; average your best rounds for a Handicap Index.
FAQ
Is differential the same as Handicap Index?
No — differential is for a single round; the formal Handicap Index is usually a weighted average of your best recent differentials.
Why multiply by 113?
113 is the USGA-defined standard (average) slope, used to normalize courses to a common baseline.
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References
Content reviewed by the Calculatorism editorial team. Results are for reference only; please refer to the relevant authorities for the official figures.