⛳ Golf Handicap Calculator

How It Works

The World Handicap System calculates your Handicap Index from your most recent round scores:

• Score Differential = (113 / Slope Rating) × (Adjusted Gross Score − Course Rating)
• From your last 20 rounds, the system selects the best differentials:

Rounds	Differentials Used	Adjustment
1–3	Lowest 1	−2.0
4	Lowest 1	−1.0
5	Lowest 1	−0
6	Lowest 2	−1.0
7–8	Lowest 2	−0
9–11	Lowest 3	−0
12–14	Lowest 4	−0
15–16	Lowest 5	−0
17–18	Lowest 6	−0
19	Lowest 7	−0
20	Lowest 8	−0

• Average the selected differentials, then multiply by 0.96 (96% rule).
• The result is your Handicap Index, rounded to one decimal place.