Golf Handicap Calculator

Calculate your golf handicap index using the official USGA / World Handicap System (WHS) formula. Track scores, estimate course handicap, and improve your game. Pure client-side.

Your Score History

Date	Course	Score	Rating	Slope	Diff.

About Golf Handicap Calculator

A golf handicap is a numerical measure of a golfer's potential ability. The USGA World Handicap System (WHS) uses the best 8 score differentials from your last 20 rounds.

Features

Pure client-side — your data never leaves your device
Official USGA / World Handicap System formula
Track up to 20 rounds with automatic score history
Quick estimate mode for one-time calculations
Calculates Handicap Index, Course Handicap, and Playing Handicap
Handicap classification and trend analysis

How to Calculate Your Golf Handicap

Enter your golf scores along with each course's Rating and Slope
Score Differential = (113 / Slope) × (Score − Rating)
Handicap Index = Average of lowest 8 differentials × 0.96
Course Handicap = Index × (Slope / 113) + (Rating − Par)

Frequently Asked Questions

What is a good golf handicap?

A handicap of 10 or below is considered good for amateur golfers. Average: 14–15 (men), 27–28 (women).

What is Course Rating and Slope Rating?

Course Rating measures difficulty for a scratch golfer. Slope measures relative difficulty, 55–155. Standard: 113.

How many rounds to establish a handicap?

Minimum 54 holes (3 rounds of 18) under WHS.

Can my handicap be negative?

Yes, good players can have a plus (+) handicap.

How often should I update?

Under WHS, daily after each acceptable score.