Golf Handicap Calculator to Quickly Calculate Your 18 or 9 Hole Index

Golf Handicap Calculator Sign

This Golf Handicap Calculator will quickly calculate your 18-hole or 9-hole index and course handicaps.

You can enter adjusted gross scores, or use the built-in hole-by-hole form to add up your score while adjusting for your Equitable Stroke Control maximum.

Plus, you can enter rounds in any order, saving you from having to re-enter the same rating and slope multiple times. And, you can also choose to enter and save courses and tees to make future calculations even faster.

And finally, the calculator includes a printer friendly handicap report that you can submit to tournament and league organizers.

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Golf Handicap Calculator

Calculate your 18 or 9 hole golf handicap index and save your rounds, courses, and tee ratings and slopes between uses.

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Selected Data Record:

A Data Record is a set of calculator entries that are stored in your web browser's Local Storage. If a Data Record is currently selected in the "Data" tab, this line will list the name you gave to that data record. If no data record is selected, or you have no entries stored for this calculator, the line will display "None".

DataData recordData recordSelected data record: None
Gender:

Gender:

Select either Male or Female. The calculator will use your gender to establish your maximum handicap should it be needed.

Est handicapEst handicapEstimated handicap rangeEstimated handicap range:

Estimated handicap range:

If you will be entering hole-by-hole scores, the calculator will use this range to display the estimated maximum score on any hole based on your selected range.

If you won't be entering hole-by-hole scores, the calculator will ignore this setting.

Optional Add/Edit Courses:

Tap the plus (+) icon to show the course entry form.

This is an optional feature that allows you to enter the courses you play, along with the rating and slope for each tee. Your courses can then be saved using the Save feature under the Data tab.

To add a course:

  1. Select "New Course" from the drop-down menu.
  2. Enter a name for the course.
  3. Indicate whether it's an 18 or 9 hole course.
  4. Enter a color, rating, and slope for each tee you expect to play (you can leave other tees blank).
  5. the "Add Course" button. This will add the course and its tees to drop-down lists for entering rounds.

To edit a previously added course:

  1. Select the course you wish to edit from the drop-down menu.
  2. Make the desired changes.
  3. the "Save Changes" button.

To delete a previously added course:

  1. Select the course you wish to delete from the drop-down menu.
  2. the "Delete Course" button.

Note that editing or deleting a course will not be reflected in any scores you have already entered. So if any scores will be effected by the action, you will need to delete the effected rounds and re-enter them.

Course rating:

Enter the course rating for each of the tees you expect to play from. Course ratings are usually listed on a course's scorecard, and typically range between 67 and 77.

Slope rating:

Enter the course slope rating for each of the tees you expect to play from. Course slope ratings are usually listed on a course's scorecard, and range between 55 (easy) and 155 (difficult).

Course name:
Course type:
TeeRatingSlope
Enter Rounds

Enter rounds:

Rounds will be sorted by date as you enter them, so you don't have to enter rounds in any order. This can save you from having to type the course name, rating, and slope for each round. Here are the round entry steps:

  1. If you have added courses in the above section, select the course you are entering a round from.
  2. If you selected a course, select the Tee you played from.
  3. Enter the date the round was played.
  4. Enter the course name, rating, and slope. If you selected a course and tee, these should be filled in for you.
  5. Select either Total Score or Hole By Hole.
  6. If you selected Total Score, enter your Adjusted Gross Score (AGS, see the Learn section for adjusting your score according to the "Equitable Stroke Control" guidelines).
  7. If you selected Hole By Hole, enter your score for each hole, adjusting each as necessary. The golf handicap calculator will add up your scores as you enter or select them.
  8. the "Enter Round" button.
  9. Repeat for each round you wish to enter.

You will need to enter at least 5 rounds in order to calculate your handicap index, and your rounds can be saved using the Save feature under the Data tab.

If you see a mistake after entering a round, you can delete if from the rounds list and re-enter it.

Date:
CourseRatingSlope

Number of holes played:

Select either 9 holes or 18 holes.

9 hole rounds: If you select "9 holes", and the course you played is a 9-hole course, enter the rating as provided by the course. Otherwise, if the 9 holes were played on an 18-hole course, and you didn't add the course to the calculator, manually divide the rating by two and enter it above. If you added the course and tees to the calculator, the calculator will divide the rating by two for you when calculating your 9-hole handicap from 9-hole rounds played on a 18-hole courses.

Score entry form:

Select either "Total Score" or "Hole By Hole".

Total Score: If you select "Total Score", enter your adjusted gross score for the round in the field provided.

Hole By Hole: If you select "Hole By Hole", the calculator will display an 18-hole form, along with an option to enter the hole scores using either a keypad, or drop-down menus. In either case, the calculator will add up your total score for you as you type or select your hole scores. Be sure to adjust any scores that exceed the maximum established by the following Equitable Stroke Control chart.

Equitable Stroke Control
18-Hole Course HandicapMaximum Number on any Hole
9 or lessDouble Bogey
10 thru 197
20 thru 298
30 thru 399
40 or more10
Equitable Stroke Control
9-Hole Course HandicapMaximum Number on any Hole
4 or lessDouble Bogey
5 thru 97
10 thru 148
15 thru 199
20 or more10
Total score:
18-hole hdcp:18-hole hdcp:18-hole handicap index:18-hole handicap index:

Handicap Index:

This is your estimated handicap index based on the number of scores you have entered. The number of differentials ([[score - rating] x 113] / slope) used to calculate your handicap is based on the following chart.

ScoresDifferentials
5 or 6Lowest 1
7 or 8Lowest 2
9 or 10Lowest 3
11 or 12Lowest 4
13 or 14Lowest 5
15 or 16Lowest 6
17Lowest 7
18Lowest 8
19Lowest 9
20Lowest 10
0.0
9-hole hdcp:9-hole hdcp:9-hole handicap index:9-hole handicap index:

9 Hole Handicap Index:

If you entered more than 4 9-hole rounds, this is your estimated 9-hole handicap index based on the number of scores you have entered.

0.0

If you would like to save the current entries to the secure online database, tap or click on the Data tab, select "New Data Record", give the data record a name, then tap or click the Save button. To save changes to previously saved entries, simply tap the Save button. Please select and "Clear" any data records you no longer need.

Help and Tools

Learn

How to calculate your handicap index, handicap differentials, and course handicaps.

How to Calculate Your Handicap

In order to calculate your handicap index, you will need a minimum of 5 golf scores (20 is ideal).

Step #1: Adjust Scores

Once you have 5 golf scores, you will then need to adjust those scores based on the maximum hole scores as stipulated by Equitable Stroke Control.

Equitable Stroke Control
18-Hole Course HandicapMaximum Number on any Hole
9 or lessDouble Bogey
10 thru 197
20 thru 298
30 thru 399
40 or more10
Step #2: Calculate Differentials

Next, you need to calculate the differential for each of the adjusted scores. The differential for each score is calculated using the following formula:

Differential = (Adjusted Gross Score - USGA Course Rating) x 113 / Slope Rating

If it helps I have included the following golf handicap differential calculator.

Golf Differential Calculator
Course rating:
Slope rating:
Adjusted gross score:
Differential:13.8
Step #3: Determine Number of Differentials to Use

Next, determine the number of differentials to use based on the following chart:

ScoresDifferentials
5 or 6Lowest 1
7 or 8Lowest 2
9 or 10Lowest 3
11 or 12Lowest 4
13 or 14Lowest 5
15 or 16Lowest 6
17Lowest 7
18Lowest 8
19Lowest 9
20Lowest 10
Step #4: Calculate the Average Differential

Sum the lowest differentials and divide by the number of differentials used.

Step #6: Determine Index

Multiply the average differential from step #4 by 0.96 and drop any decimals after the 10th place. For example, if the result of multiplying the average differential by 0.96 is 12.234, your handicap index would be 12.2.

Step #7: Adjust Index If Necessary

The maximum handicap index is 36.4 for men, and 40.4 for women. So if your calculated index exceeds your maximum, use the maximum as your index.

How to Calculate Your Course Handicap

Once you have calculated your handicap index you will then need to convert it to a course handicap in order to apply your handicap to a scorecard. The course handicap formula is as follows:

Course Handicap = (Handicap Index X Tee Slope Rating) / 113

If it helps, I have included the following course handicap calculator:

Course Handicap Calculator
Handicap index:
Tee slope rating:
Course handicap:13

For a more detailed explanation of the golf handicap system and its intricate details, please visit the USGA Handicap System Manual.

Adjust Calculator Width:

Move the slider to left and right to adjust the calculator width. Note that the Help and Tools panel will be hidden when the calculator is too wide to fit both on the screen. Moving the slider to the left will bring the instructions and tools panel back into view.

Also note that some calculators will reformat to accommodate the screen size as you make the calculator wider or narrower. If the calculator is narrow, columns of entry rows will be converted to a vertical entry form, whereas a wider calculator will display columns of entry rows, and the entry fields will be smaller in size ... since they will not need to be "thumb friendly".

Show/Hide Popup Keypads:

Select Show or Hide to show or hide the popup keypad icons located next to numeric entry fields. These are generally only needed for mobile devices that don't have decimal points in their numeric keypads. So if you are on a desktop, you may find the calculator to be more user-friendly and less cluttered without them.

Stick/Unstick Tools:

Select Stick or Unstick to stick or unstick the help and tools panel. Selecting "Stick" will keep the panel in view while scrolling the calculator vertically. If you find that annoying, select "Unstick" to keep the panel in a stationary position.

If the tools panel becomes "Unstuck" on its own, try clicking "Unstick" and then "Stick" to re-stick the panel.