How to Calculate a Course Handicap
Course Handicap = Handicap Index x (Slope Rating / 113) + (Course Rating - par). That's USGA Rule 6.1a, and the course handicap calculator does the sum for you. Playing in Australia? Golf Australia uses a Daily Handicap with its own formula, so skip to the Aussie section below.
Your Index is portable. Your Course Handicap is how many strokes you get off the tees you're actually playing today. Here's how to get from one to the other.
How to calculate a Course Handicap in 5 steps
- Find your Handicap Index. It's the number on your handicap record.
- Find the Slope Rating and Course Rating for your tees. They're on the card or the course's rating info, along with par.
- Apply the formula. Handicap Index x (Slope Rating / 113) + (Course Rating - par).
- Round it the way the rules say. Nearest whole number, with .5 rounded up. If an allowance comes next, keep the unrounded number and round once at the end.
- Apply any handicap allowance for the format. That gives you your Playing Handicap. For a scramble, that's the team percentages.
The formula, straight from Rule 6.1a
Here's USGA Rule 6.1a for an 18-hole round, written in plain text:
Course Handicap = Handicap Index x (Slope Rating / 113) + (Course Rating - par)
And the rounding note under it: "The calculated 18-hole and 9-hole Course Handicap is rounded to the nearest whole number, with .5 rounded upwards". The rule rounds it for net double bogey and score differentials. "Otherwise, the full calculated value is retained and rounding occurs only after the Playing Handicap calculation."
So two jobs, two numbers. Rounded for your own card. Unrounded if a format allowance is coming.
Worked example (made-up numbers)
Example only. Made-up golfer, made-up tees. Handicap Index 14.2, Slope Rating 131, Course Rating 72.4, par 71.
| Step | Working | Result |
|---|---|---|
| Slope Rating / 113 | 131 / 113 | 1.159292... |
| Handicap Index x that | 14.2 x 1.159292... | 16.461947 |
| Course Rating - par | 72.4 - 71 | 1.4 |
| Add them | 16.461947 + 1.4 | 17.861947 (unrounded) |
| Round to nearest whole number | 18 |
So a 14.2 Index plays off 18 on these tees. Keep the 17.861947 handy if a format allowance comes next.
Want to run your own numbers? Use the course handicap calculator.
Why your Course Handicap can be higher than your Index
It all comes out of the formula. Two parts push it up or down:
| Part of the formula | When it adds strokes | When it takes strokes off |
|---|---|---|
| Slope Rating / 113 | Slope above 113 | Slope below 113 |
| Course Rating - par | Course Rating above par | Course Rating below par |
In the example, Slope 131 and a Course Rating 1.4 over par both add strokes. That's how 14.2 turns into 18.
Course Handicap vs Playing Handicap
Your Course Handicap is the full number for the tees. Your Playing Handicap is what you actually get after the format's allowance.
USGA Rule 6.2a:
Playing Handicap = Course Handicap (unrounded) x handicap allowance
"The calculated Playing Handicap is rounded to the nearest whole number, with .5 rounded upwards."
Appendix C backs it up: "Handicap allowances are applied to the unrounded Course Handicap as the final step in calculating a player's Playing Handicap". And if there's no allowance? Rule 6.2a/1 says: "Where no handicap allowance is applied or it is set at 100%, the Playing Handicap is the same as the rounded Course Handicap unless an adjustment for multiple tees is required."
Same example golfer in individual stroke play, which Appendix C sets at 95%: 17.861947 x 0.95 = 16.968850, which rounds to 17.
USGA scramble allowances
These are from USGA Appendix C. Rank the players by Course Handicap, lowest to highest, then apply the percentages in order:
| Format (Appendix C) | Recommended Handicap Allowance |
|---|---|
| Scramble (4 players) | 25% low/20%/15%/10% high |
| Scramble (3 players) | 30% low/20%/10% high |
| Scramble (2 players) Double/Better Shot | 35% low/15% high |
If our example golfer is the low player in a 4-player scramble: 17.861947 x 0.25 = 4.465487, so 4 by Rule 6.2a rounding. How the team total gets rounded is a call for the committee, so check with your club or association.
Appendix C also says "Allowances may be adjusted for different field sizes and/or the make-up of the field" and "the Committee should specify the handicap allowance within the Terms of the Competition." So read the event sheet first.
Calculators for each one:
- USGA 4-man scramble handicap calculator
- USGA 3-man scramble handicap calculator
- USGA 2-man scramble handicap calculator
- Scramble handicap calculator
Need each player's Course Handicap first? The course handicap calculator does them one at a time. Running the sign-up sheet for an event? See how to collect course handicaps for a scramble.
Nine holes
USGA has a nine-hole version, and Golf Australia has its own nine-hole Daily Handicap formula too. If you're working one of those, check with your club or association.
Australia: Daily Handicap, not Course Handicap
Aussie golfers don't use the US Course Handicap for comps. Golf Australia says there are "two types of official handicap allocated in Australia under the Australian Rules of Handicapping; a GA Handicap and a Daily Handicap." And "The Daily Handicap is the handicap to be used in handicap competition play."
Golf Australia's 18-hole formula, section 3(H) of its January 2026 guide, written in plain text:
THE FORMULA FOR AN 18-HOLE DAILY HANDICAP = ((GA Handicap x Slope Rating / 113) + (Scratch Rating minus Par)) x 0.93 x Consistency Factor
The Consistency Factor values, per the guide: "Women/Girls = 1.0483 | Men/Boys = 0.9986". And "The result of the calculation is rounded to the nearest whole number."
A few differences worth knowing:
- Where the US says Course Rating, Golf Australia says Scratch Rating.
- The 0.93 is built in. Golf Australia calls it "the Multiplier".
- The Consistency Factor is a GA thing. There's none in the US formula.
So don't run the US formula and call it your Daily Handicap. Golf Australia says CONNECT "will calculate it all for you", and "GA also provides every club with easy-to-use Daily Handicap look-up posters."
Playing Ambrose? The team handicap has its own method, so use the Ambrose handicap calculator.
How do you calculate a Course Handicap?
Multiply your Handicap Index by the Slope Rating divided by 113, then add the Course Rating minus par. Round to the nearest whole number, with .5 rounded up. That's USGA Rule 6.1a. The course handicap calculator does it for you.
What is the difference between Handicap Index and Course Handicap?
Your Index is your number that goes everywhere with you. Your Course Handicap is that Index converted for one set of tees, using its Slope Rating, Course Rating and par. Same Index, different tees, different Course Handicap. If you want to see how the Index itself gets built, try the golf handicap calculator or the score differential calculator.
Which handicap do you use for a scramble?
Under USGA Appendix C, start from each player's Course Handicap, rank them lowest to highest, and apply the scramble percentages: 25/20/15/10 for 4 players, 30/20/10 for 3, 35/15 for 2. The committee can change those, so check the event sheet. In Australia, follow your club's Ambrose method and use the Ambrose handicap calculator.
Is a Daily Handicap the same as a Course Handicap?
No. A Daily Handicap is Golf Australia's competition handicap. It uses your GA Handicap, the Scratch Rating, the 0.93 Multiplier and a Consistency Factor. A US Course Handicap has none of the last two. Get your Daily Handicap from Golf Australia CONNECT or your club's look-up chart.
Keep reading
- Course handicap calculator
- How to collect course handicaps for a scramble
- How to calculate a scramble handicap
- How to calculate a score differential
- Scramble tee assignments
- Gross vs net scramble
- Scramble handicap calculator
- Ambrose handicap calculator
- Golf scramble scoring app
Once the team handicaps are set
Scrambled Eggs keeps the team score and whose shot got used on one phone per group, works out the Team Ambrose handicap for you, and saves the round to history.