Take the scores from the last five rounds(18 holes each) that you played.

Look up the rating and slope for the course that you played for eachof these scores. This informationis usually printed on the scorecard  although you can also call the course.

Subtract the course rating from the score you earned on that course.

Multiply that number by 113.

Divide that number by the slope of the course. Thí number is the differential.

Take lowest of your five differentials and multiply it by 0.96, and you have your handicap.