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Golf Handicap Calculator

WHS Handicap Index and Course HandicapRuns locally · nothing uploaded

Recent scores (up to 20, newest last)
Adjusted grossCourse ratingSlopeDifferential
19.6
18.1
22.2
17.5✓
19.9

Adjusted gross score: each hole is capped at net double bogey (par + 2 + strokes received).

Handicap Index
17.5

5 scores: average of the lowest 1

Course Handicap
Strokes received
19

Uses the core WHS rules without exceptional-score reductions, soft/hard caps or playing conditions (PCC). Your official index comes from your association.

Also works as:golf handicap calculatorwhs handicap indexcourse handicap calculatorscore differential

How it works

Formula

Differential = (113 ÷ slope) × (adjusted gross − course rating − PCC)

PCC is taken as 0 here.

Index: average of the lowest 8 of 20; fewer scores use the WHS table (with −2.0/−1.0/−1.0 for 3/4/6 scores)
Course Handicap = Index × (slope ÷ 113) + (rating − par)

Worked example

Given: Five rounds: 95, 92, 98, 90, 94; course to play: rating 72.0, slope 125, par 72

  1. Best differential: (113 ÷ 124) × (90 − 70.8) ≈ 17.5.
  2. With 5 scores, the lowest 1 counts: index 17.5.
  3. Course handicap = 17.5 × 125 ÷ 113 ≈ 19.4 → 19.

Result: Handicap Index 17.5; 19 strokes on this course.

Sources

  • R&A / USGA. Rules of Handicapping (World Handicap System), 2024.

How to use

  1. 1Enter each round's adjusted gross score, rating and slope.
  2. 2See the differentials; counted scores are ticked.
  3. 3Enter the course you're playing to get strokes received.

FAQ

How is the index calculated?

Differential = (113 ÷ slope) × (score − rating). With 20 scores, average the best 8; with fewer, the WHS table uses fewer, with adjustments for 3–6 scores.

What's a course handicap?

Index × (slope ÷ 113) + (course rating − par).

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