This tool helps you estimate your Handicap Index based on the World Handicap System (WHS). It also works as a score differential calculator for each round you enter. Your Handicap Index is calculated from the average of your best score differentials (usually the best 8 of your last 20).

To get an accurate estimate, you'll need your gross score, along with the Course Rating and Slope Rating for each round. This golf score calculator is perfect for tracking your potential before your official handicap is updated.