Golf Handicap Calculator for the World Handicap System
This golf handicap calculator turns your scorecards into the three numbers that matter under the World Handicap System (WHS): your Score Differential for a single round, your Handicap Index from recent rounds, and your Course Handicap for a specific set of tees. Enter a few scores and read your result instantly — no sign-up, no spreadsheet, nothing to install.
It is built for any golfer who wants to track their game, settle a friendly match fairly, or check a number from the course before you tee off. Each calculation follows the official WHS formulas and shows the exact math, so you can see how every result is derived.
Key Terms to Know
Course Rating
The expected score for a scratch (expert) golfer on a given set of tees, typically between 68 and 76.
Slope Rating
How much harder a course plays for a bogey golfer than for a scratch golfer. It ranges from 55 to 155, with 113 as the standard.
PCC
The Playing Conditions Calculation adjusts for unusual conditions such as extreme weather. It runs from −1 to +3 and is 0 on a normal day.
Adjusted Gross Score
Your total strokes after a maximum-per-hole cap (net double bogey) is applied, so one disaster hole does not skew your handicap.
How to Calculate Your Golf Handicap
Score Differential
On the Score Differential tab, enter your Adjusted Gross Score, the Course Rating and Slope Rating from the scorecard, and a PCC value (leave it at 0 unless conditions were unusual). Press Enter or click Calculate. The tool applies (113 / Slope) × (Score − Rating − PCC).
Handicap Index
On the Handicap Index tab, enter the score, course rating, and slope rating for a round and click Add Round. Once you have at least 3 rounds, your Handicap Index is computed automatically, and the best differentials it uses are highlighted in the table.
Course Handicap
On the Course Handicap tab, enter your Handicap Index along with the course's Slope Rating, Course Rating, and Par. Click Calculate to convert your index into the strokes you receive, using HI × (Slope / 113) + (Rating − Par).
Check the breakdown
Every result shows a step-by-step formula breakdown with your numbers filled in, so you can confirm the math. Open the Quick Reference section any time to see all three formulas at a glance.
Features
Three Calculation Modes
Switch between Score Differential, Handicap Index, and Course Handicap tabs to cover every WHS number in one tool.
Score Differential with PCC
Calculate a single-round differential and apply a Playing Conditions adjustment from −1 to +3.
Multi-Round Index Tracker
Add rounds and build a Handicap Index from your recent scores, with the calculation refreshing as you go.
Best-Differential Highlighting
The rounds that feed your index are picked automatically and highlighted in the table, so you see exactly which scores count.
Course Handicap & Playing Info
Convert your index to strokes for a specific course and see the strokes received plus the expected net par score.
WHS-Compliant Formulas
Calculations follow the World Handicap System, with the index capped between 0.0 and 54.0 and short-record adjustments applied.
Step-by-Step Breakdown
Each result shows the full formula with your values substituted in, so nothing is a black box.
Quick Reference
An expandable panel lists all three WHS formulas for easy access during play or practice.
Keyboard Support
Press Enter in any input to calculate or add a round, and clear everything with the Reset button.
Frequently Asked Questions
How do you calculate a golf handicap?
First, turn each round into a Score Differential with (113 / Slope) × (Adjusted Gross Score − Course Rating − PCC). Then your Handicap Index is the average of your best differentials from your recent rounds. This tool does both steps for you: add your rounds and it calculates the index automatically.
How many scores do I need for a handicap?
You need a minimum of 3 rounds for the calculator to produce a Handicap Index. The more rounds you add, the more representative the result becomes; with a full set of 20 rounds, the index uses the average of your best 8 differentials.
What is the difference between Handicap Index and Course Handicap?
Your Handicap Index is a portable number that reflects your overall ability. Your Course Handicap converts that index into the strokes you actually receive on a specific course, factoring in its Slope Rating, Course Rating, and Par. Two golfers with the same index can have different Course Handicaps on different courses.
Where do I find the Course Rating and Slope Rating?
Both numbers are printed on the course scorecard, usually near the tee-box information, and they differ by tee. You can also find them on the course's website or through your national golf association.
What is PCC (Playing Conditions Calculation)?
PCC is an adjustment for unusual playing conditions such as extreme weather or course setup. It ranges from −1 to +3 and is 0 on most days. Your golf club or association publishes the PCC value for each day; you can select it on the Score Differential tab.
What is an Adjusted Gross Score?
It is your actual score with a maximum-per-hole cap applied. Under WHS, the most you can record on a hole is net double bogey (par + 2 + any handicap strokes you receive there), which stops one bad hole from disproportionately affecting your handicap.
Why does my index change when I remove a round?
The Handicap Index recalculates from the rounds that remain. Because the number of best differentials used depends on how many rounds you have, removing a round can change which differentials are selected and how many count toward the result.
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