Golf Handicap Score Differential Calculator
Works out how one round compares across courses of different difficulty.
Score differential
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Strokes above the course rating —
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The formula
differential = (113 ÷ slope) × (adjusted score − course rating − PCC)
This is the World Handicap System’s arithmetic for a single 18-hole round. PCC is the playing conditions calculation.
What to watch out for
Use the score after any hole limits your authority applies, which is why it is called adjusted.
Frequently Asked Questions
What is the differential for 85 on a 71.5 / 125 course?
12.2.
Why 113?
It is the slope rating of a course of standard relative difficulty, so at slope 113 the differential is simply the strokes above the course rating.