Golf Score To Handicap Calculator

Score Differential Formula:

\[ SD = (Score - CR) \times \left( \frac{113}{SR} \right) \]

Score Differential (SD):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Score Differential Formula?

The Score Differential formula calculates the handicap differential for a golf score, which is used to determine a golfer's handicap index. It adjusts the gross score based on course difficulty using the Course Rating and Slope Rating.

2. How Does the Calculator Work?

The calculator uses the Score Differential formula:

\[ SD = (Score - CR) \times \left( \frac{113}{SR} \right) \]

Where:

\( Score \) — Gross score (number of strokes)
\( CR \) — Course Rating (standard score for scratch golfers)
\( SR \) — Slope Rating (measure of course difficulty, 55-155)
\( 113 \) — Standard Slope Rating

Explanation: The formula adjusts your score relative to course difficulty. A higher Slope Rating makes the differential smaller for the same gross score.

3. Importance of Score Differential Calculation

Details: Score Differentials are essential for calculating a golfer's handicap index. The handicap system uses the best 8 of your most recent 20 differentials to determine your playing ability.

4. Using the Calculator

Tips: Enter your gross score (total strokes), the Course Rating (typically 67-74), and the Slope Rating (55-155). All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a good Score Differential?
A: Lower is better. A differential of 0 means you played to scratch level. Most amateur golfers have differentials between 10-30.

Q2: How many differentials are needed for a handicap?
A: You need at least 3 scores to establish a handicap, but the system uses up to 20 scores for more accuracy.

Q3: What's the difference between Course Rating and Slope Rating?
A: Course Rating measures difficulty for scratch golfers, while Slope Rating measures relative difficulty for bogey golfers compared to scratch golfers.

Q4: Why is 113 used in the formula?
A: 113 is the standard Slope Rating, representing a course of average difficulty. It serves as the baseline for calculations.

Q5: Can I use this for 9-hole scores?
A: For 9-hole scores, you would calculate the differential similarly but combine two 9-hole scores to create an 18-hole differential.