Golf Handicap Calculator

Estimate a golf handicap index from adjusted gross scores, course ratings, and slope ratings.

Preparing Golf Handicap Calculator

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Input

Choose the modern WHS method or the legacy method, then enter matching lists of scores, course ratings, and slope ratings. This tool shows the result instantly without step-by-step output.

Input summary

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How to use Golf Handicap Calculator

Provide the round scores and course-difficulty values, and the calculator will estimate the handicap index those differentials imply.

What this calculator is for

This calculator is for practice tracking and informal performance review when a golfer wants to compare a modern WHS-style estimate with a legacy handicap-style estimate.

Tips

Match each score with the correct course rating and slope rating from the same round so the differential stays valid.
Modern mode uses the lowest differentials from the most recent 20 rounds, while legacy mode requires exactly 20 rounds and uses the best 10 multiplied by 0.96.