Golf Handicap
Calculator
Calculate your World Handicap System (WHS) Handicap Index from up to 20 rounds. Enter your scores, course rating, and slope — get your index, score differentials, and course handicap instantly.
WHS
Formula
20
Max Rounds
Best 8
Used
+0.96
Adjustment
Golf Handicap Calculator
World Handicap System (WHS 2020+)
Your Rounds (3 Entered)
Your Handicap Index
11.3
Best 1 of 3 rounds used
| QUICK REFERENCE
Golf Handicap Index Ranges
What your Handicap Index says about your game.
| Handicap Index | Category | Typical Score (Par 72) | Description |
|---|---|---|---|
| +3 to 0 | Scratch+ | 69-72 | Elite amateur, competes at club & regional level |
| 1 - 9 | Low Handicap | 73-81 | Very strong player, consistent ball-striker |
| 10 - 18 | Mid Handicap | 82-90 | Solid recreational golfer, breaks 90 regularly |
| 19 - 28 | High Handicap | 91-100 | Developing golfer, working on consistency |
| 29 - 54 | Beginner | 100+ | New to the game, still building fundamentals |
WHS Uses Best 8 of Last 20
The World Handicap System only counts your best 8 Score Differentials from your most recent 20 rounds, then multiplies by 0.96. This means one bad round rarely hurts your index — but a string of good rounds will lower it quickly.
⛰️ What is Slope Rating?
Slope Rating measures a course's relative difficulty for a bogey golfer (around 18-20 handicap) compared to a scratch golfer. It ranges from 55 (easiest) to 155 (hardest), with 113 being the standard average. A slope of 130 means the course plays significantly harder for average golfers than for scratch players. Most public courses fall between 110-130.
🎯 Course Rating vs Par
Course Rating is the expected score for a scratch golfer under normal conditions — it's a decimal number close to par (e.g., 71.4 on a par 72). It's not the same as par: a course rated 73.2 on a par-72 plays harder than par suggests, even when every golfer's handicap accounts for obstacles, length, and difficulty.
| How Golf Handicap Is Calculated (WHS)
The World Handicap System (WHS), introduced globally in 2020, unified six previously separate handicap systems (USGA, CONGU, EGA, Golf Australia, SAGA, and ASOCA) into one universal standard, now used in over 100 countries and governed by the R&A and USGA.
Step 1 — Calculate Score Differential
For each round played, calculate the Score Differential using your Adjusted Gross Score (gross score with max-per-hole limits applied), the Course Rating, and the Slope Rating of the tees played.
Score Differential = (Adjusted Gross Score − Course Rating) × 113 ÷ Slope RatingExample: Score 88, Course Rating 71.4, Slope 128 → (88 − 71.4) × 113 ÷ 128 ≈ 14.65
Step 2 — Select the Best 8 of 20
Once you have 20 rounds on record, WHS takes the 8 lowest (best) Score Differentials and averages them. With fewer rounds, different selection rules apply — for example, with 3 rounds, only the single best differential is used. Our calculator shows which rounds are counted.
Rounds Available → Differentials Used: 1-3 → lowest 1 · 6-8 → lowest 2 · 19-20 → lowest 8Step 3 — Apply the 0.96 Multiplier
The average of the best differentials is multiplied by 0.96 to produce the Handicap Index. This slight reduction is sometimes called the "bonus for excellence" — it ensures that golfers slightly outperform their handicap on average, which is considered fairer in competition.
Handicap Index = Average of Best 8 Differentials × 0.96Example: Average best 8 ≈ 14.8 → Handicap Index = 14.8 × 0.96 ≈ 14.2
Step 4 — Calculate Course Handicap
Before playing a specific course, convert your Handicap Index into a Course Handicap, which tells you the actual number of strokes you receive on that day's course and tees.
Course Handicap = round( Handicap Index × (Slope Rating ÷ 113) + (Course Rating − Par) )Example: Index 14.2, Slope 128, Rating 71.4, Par 72 → round(14.2 × (128 ÷ 113) + (71.4 − 72)) = round(16.08 − 0.6) = 15 strokes
| WHS Rounds Required & Selection Rules
Initial Handicap Establishment
You need a minimum of 54 holes to establish an initial Handicap Index — typically three 18-hole rounds or six 9-hole rounds. For 9-hole rounds, two are combined into an 18-hole equivalent before calculating a differential.
Rounds Available → Differentials Used (Selection)
3 rounds → lowest 1 differential (-2.8 adjustment) · 4 rounds → lowest 1 (-1.0 adjustment) · 5 rounds → lowest 1 · 6-8 rounds → lowest 2 · 9-11 rounds → lowest 3 · 12-14 rounds → lowest 4 · 15-16 rounds → lowest 5 · 17-18 rounds → lowest 6 · 19 rounds → lowest 7 · 20+ rounds → lowest 8 differentials (standard).
Low Handicap Index (LHI)
WHS also tracks your Low Handicap Index — the lowest Handicap Index you have ever held. If your current index rises more than 3.0 strokes above your LHI, the WHS applies a soft cap (slowing the increase) or a hard cap (preventing the index from exceeding LHI + 5.0). This protects against sudden inflation after one unusually poor stretch.
| Adjusted Gross Score & Equitable Stroke Control
Net Double Bogey Rule
You don't post your raw gross score for handicap purposes — you post an Adjusted Gross Score (AGS), which applies a maximum per-hole score limit to prevent one disaster hole from unfairly inflating your handicap. Under WHS, the maximum score on any single hole is Net Double Bogey: par + 2 + any handicap strokes you receive on that hole. For example, on a par-4 where you receive 1 stroke (based on your Course Handicap), your maximum posted score is 4 + 2 + 1 = 7 — any score higher than 7 on that hole is recorded as 7 for handicap purposes.
Playing Conditions Calculation (PCC)
WHS also applies a daily Playing Conditions Calculation that adjusts all Score Differentials from a given day if course-wide scoring was significantly harder or easier than expected due to weather, pin positions, or course setup. The PCC adjustment can range from −1 to +3 strokes added to each differential.
— FAQ