Handicap Indexes are computed using Handicap Differentials. To compute the

Handicap Differential for a given round, subtract the Course Rating from the

Adjusted Gross Score, multiply the difference by 113, and divide the result by

the course Slope rating. Round the Handicap Differential to the nearest tenth.

When 20 rounds are available, the best 8 of the most recent 20 Handicap

Differentials will be used. The rounds from which the differentials are

being used are marked with an asterisk '*' on the Handicap Data screen.

A handicap differential in golf is a number that reflects a single round's performance relative to a specific course's difficulty. It is calculated by taking your adjusted gross score, subtracting the course's rating, and then adjusting the result based on the course's slope rating. This number allows golfers to compare performances across different courses and helps create a fair, consistent handicap index.

Calculation formula.

The specific details are on the Golf Canada Website