Golf Handicap Calculator (WHS)

Enter your recent rounds and get an estimated Handicap Index — with a full explanation of every step in the calculation.

Your rounds
Total strokes per round, separated by commas or spaces. Played 9 holes? Pick a 9-hole course, or “Other course” for that round. You can change the course of any round below.
🔒 Your rounds are saved on this device only.
Estimated Handicap Index
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WHS estimate · for official registration join an RFEG-affiliated club
Round-by-round breakdown
Course Score Differential How it's calculated

How your index was calculated

Courses for your level
This is an estimate based on the WHS formula. An official Handicap Index requires at least 54 holes played at an RFEG-affiliated club and submission through their system. rfeg.es → How to get an official handicap in Spain →

How does this work?

How do I find out my handicap? ▼
If you are federated in Spain, your official Handicap Index is in the free RFEGolf app. If you are not, enter your recent scores above: the calculator estimates your index with the official WHS formula. To get an official one, see how to get a golf handicap in Spain.
What is a Handicap Differential? ▼
A Handicap Differential measures how your score compares to the expected score for a scratch golfer on that specific course and day. The WHS formula is:

Differential = (Score − Course Rating) × (113 ÷ Slope)

The "113" is the standard Slope for an average course. If the Slope is higher than 113 (like La Galiana at 148), the formula shrinks your differential — harder courses are rewarded.
What's the difference between Course Rating and Par? ▼
Par is the number of strokes expected for an expert player — it's a round number (e.g. 72) used for scoring on the day.

Course Rating is the score a scratch golfer (handicap 0) would realistically shoot in normal conditions — it's more precise (e.g. 74.1) and accounts for course layout, hazards, and conditions. Par is not used in the WHS handicap formula — only Rating and Slope are.
What does the Slope rating mean? ▼
Slope measures how much harder a course plays for a bogey golfer (around handicap 20) compared to a scratch golfer. The baseline is 113 — an "average" course. A Slope of 148 (like La Galiana or El Bosque) means the course punishes inconsistency significantly more than an average course. A Slope of 113 means the difficulty gap between experts and amateurs is typical.
Is there a multiplier or adjustment in the formula? ▼
No multiplier. Under the World Handicap System (2020, including the 2024 revision) your Handicap Index is simply the average of your best 8 differentials from your last 20 rounds. The old 0.96 “bonus for excellence” was dropped in 2020. The only adjustments are for new golfers with few rounds: −2.0 with 3 rounds, −1.0 with 4 rounds and −1.0 with 6 rounds. (Separately, WHS can adjust each round's differential for weather and course conditions — the Playing Conditions Calculation — which only your club's system can apply.)
Can I use 9-hole scores? ▼
Yes, as a rough indication. The calculator doubles each 9-hole differential to estimate an 18-hole round. The official WHS method is different: it adds an expected score for the 9 holes you didn't play, based on your existing index, so your official number may differ. For an official index, submit your rounds through an RFEG-affiliated club.
How many rounds do I need for an official handicap? ▼
Under WHS rules, you need a minimum of 54 holes (typically 3 × 18-hole rounds, or equivalent) submitted through an RFEG-affiliated club for an official Handicap Index. This calculator gives you an estimate for planning purposes — to get an official index, join a club affiliated with the Royal Spanish Golf Federation (rfeg.es).

Understanding Golf Handicaps in Spain

Spain follows the World Handicap System (WHS), which replaced the previous EGA (European Golf Association) system worldwide in 2020 and is administered in Spain by the RFEG (Real Federación Española de Golf). Your Handicap Index is a single portable number on a 54.0 scale — the lower the better — representing your potential rather than your average: it is built from your best differentials, not all of them.

The key number behind every calculation is the Handicap Differential: (Score − Course Rating) × (113 ÷ Slope). The Course Rating is the score a scratch golfer (handicap 0) is expected to shoot in normal conditions — typically a decimal like 72.4, more precise than par. The Slope (55–155, with 113 as the global average) measures how much more difficult the course is for a bogey golfer versus a scratch golfer. Together, these two numbers let a round at Campoamor be compared fairly with a round at El Saler — very different courses, same portable scale.

Once you have your Handicap Index, it converts to a Course Handicap for each specific round: Course Handicap = Handicap Index × (Slope ÷ 113) + (Course Rating − Par). This is the number of extra strokes you receive in a strokeplay competition. A high-Slope course like El Bosque (Slope 148) gives you more strokes than a lower-Slope course at the same Index. In Spain, competition scorecards show which holes grant strokes based on their stroke index.

Most clubs in the Alicante and Valencia regions welcome visitors with a valid RFEG, EGA, or R&A-affiliated handicap certificate — some championship courses (like Campoamor) require one to play at all. If you are playing casually without an official handicap, this calculator gives you a realistic working estimate: useful for choosing a course at your level, understanding how your score translates, and knowing what to aim for before you formalise through a club.