Golf Handicap Calculator

The World Handicap System turns a round into a score differential, averages the lowest of your recent differentials into an index, and converts that index into strokes for the tees you are playing. This page does those three steps: enter an adjusted gross score with the course rating and slope for one round, a list of differentials for the average, or an index with the slope, rating and par for a course handicap. Every result names the rule it comes from and shows the working. It is not an official Handicap Index, which only an authorized club or association can issue through a licensed scoring service from the scores you submit, and the caps and exceptional score reductions that calculation applies are not done here.

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The number one round contributes to a handicap, before any averaging.

Your gross score after the net double bogey cap has been applied to any blow-up holes.
From the scorecard, for the tees you played. It is the score a scratch golfer is expected to shoot.
From the scorecard, between 55 and 155. A course of standard difficulty is 113.
The Playing Conditions Calculation for that day, between -1 and +3. It is worked out by the scoring service overnight, so leave it at zero unless you have been told otherwise.
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Enter the score differentials from your most recent rounds, newest first, and it applies Table 5.2a.

Three to twenty numbers separated by commas or spaces. The first tab works one out from a scorecard. A plus handicap differential may be negative.
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How many strokes an index becomes on the course and tees you are about to play.

Negative for a plus handicap.
From the scorecard, between 55 and 155. A course of standard difficulty is 113.
From the scorecard, for the tees you played. It is the score a scratch golfer is expected to shoot.
The allowance set for the format: 95% is common for an individual stroke play field, 85% for fourball. Leave at 100 for a plain match.
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