Free golf handicap calculator online

Please note that this page calculates the Index using the formula that existed through December 31, 2019. On January 1, 2020, the USGA switched to the World Handicap System.


Curious what your golf handicap is? Try the free golf handicap calculator below.



What is a golf handicap and why is it needed? The USGA says the following:

"The purpose of the USGA Handicap System is to make the game of golf more enjoyable by enabling players of differing abilities to compete on an equitable basis. The System provides a fair Course Handicap for each player, regardless of ability…"


The number we generally call a "handicap" is a 2-step calculation. First your Index® is calculated. The Index® is sometimes referred to as being portable because it is the same no matter the course or tees you play. The second step provides you with a Course Handicap. The Course Handicap is specific to the course and tees you play.


Using this calculator will not provide you with an "official" USGA Handicap. You need a membership in a qualifying organization for that. However, the resulting number is correct.


Golf Handicap Index Calculator (18 holes)

This interactive free golf handicap calculator will help you to compute your 18-hole handicap index for scores posted from multiple golf courses (of 3,000 yards or more in length). The USGA has a slightly different formula for scores from courses that are 3,000 yards or less in length. The resulting number is called a Short Course Handicap® rather than an Index®. This calculator does not do the Short Course Handicap® calculation.


  1. Enter the USGA Course Rating, Course Slope (of the tees played**) and Adjusted Gross Score*** for a minimum of 5 and maximum of 20 of your most recent scores. The Rating and Slope is usually found on the scorecard from the course.
  2. When you have entered all your scores, click on the button labeled "Calculate Handicap Index®."
  3. Find your Index® in the blue box at the bottom of the table of scores.
  4. Calculate your Course Handicap using the formula below the table or clicking on the link.
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Handicap Index


The number in the cell highlighted in blue immediately above is your Index®. You may also want to calculate your Course Handicap. The formula is as follows (Slope Rating is for the tees you play):

Course Handicap = (Handicap Index) X (Slope Rating**) ÷ 113


You can also use the USGA's Course Handicap Calculator for performing the above calculation.


With the help of our free golf handicap calculator above and a simple formula, you now have your Index® and Course Handicap.


*    Plain English explanation of how to calculate your golf handicap.

**  You can use the Course Rating and Slope database if you cannot find the information elsewhere.

*** Adjusted Gross Score


Handicap System (online) for your golf group

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