How Is Course Rating Calculated? - Golf Monthly
Course Rating is a key number in the World Handicap System but what exactly is it and how is it worked out?
www.golfmonthly.comHere’s the latest on slope rating as it relates to golf’s World Handicap System.
What slope rating is
- Slope rating measures how much harder a course plays for a non-scratch golfer compared with a scratch golfer. Higher numbers mean a bigger spread between a scratch and a bogey golfer’s expected scores, i.e., more relative difficulty for higher-handicap players. This is part of the World Handicap System framework.[1][4]
How slope rating is calculated
- The standard approach uses two reference numbers for each course and tees: the Course Rating (scratch golfer) and the Bogey Rating (bogey golfer, typically around handicap 20–24). The slope is derived from the difference between Bogey Rating and Course Rating, scaled by a constant, yielding a typical range roughly from 55 to 155. The common formula, used in many regions, is roughly: Slope = 5.381 × (Bogey Rating − Course Rating) + 113 for men, with a slightly different factor for women. This is the widely cited method behind slope values.[2][4][5]
How often ratings are updated
- Ratings are revisited whenever a course makes permanent changes (e.g., new tee placements, length adjustments, or significant layout changes). In those cases, a club or national association notifies the Authorized Association, which reviews Course Rating and Slope Rating to determine if a re-rating is necessary. Temporary conditions (like a temporary green or tee) may lead to temporary adjustments, evaluated by the Handicap Committee and the Authorized Association as to score acceptability for handicap purposes.[3]
What this means for players in practice
- For players, slope rating influences how many strokes are allotted for different skill levels when using the World Handicap System. A course with a high slope will generally result in a larger disparity between a scratch golfer’s expected score and a bogey golfer’s score, affecting the handicap index calculation on that course.[1]
Illustrative note
- In many public discussions and explanations, slope values around 113 are considered “standard difficulty,” with higher numbers indicating greater relative difficulty for higher-handicap players.[4][5]
If you’d like, I can pull the latest slope rating values for your home courses or a specific club, and summarize any recent changes or temporary adjustments. Also, I can share a short example showing how a given Course Rating and Bogey Rating translate into a slope value using the common formula. Sources: Golf Monthly explanations of slope rating and calculation, plus related articles on course and slope ratings, and the general World Handicap System framework.[5][2][3][1]