Score to Handicap Estimator

Estimate your Handicap Index from a recent 18-hole score

Full Calculator

Your Score

Course Rating

Slope Rating

Estimated Handicap

Enter your score above

Formula: (Score - Course Rating) x 113 / Slope Rating. This estimates a single-round differential. Your official Handicap Index uses the average of your best 8 of last 20 rounds. Find course ratings on your club's scorecard or GHIN.

Stableford Points Calculator

Score your round hole by hole -- total updates instantly

Full Guide

Total Points

Par = 36 pts

Scramble Team Handicap

Enter each player's handicap -- get your team allowance

Full Guide

Player 1 (lowest)

Player 2

Player 3

Player 4 (highest)

Team Allowance

Enter player handicaps above

Formula: (P1 x 20%) + (P2 x 15%) + (P3 x 10%) + (P4 x 5%). For 2-player teams leave P3 and P4 blank -- uses 35% + 15%.

GIR Target by Handicap

How many greens in regulation should you be hitting?

Full Guide

Your Handicap

GIR This Round

Handicap	Target GIR	GIR %	Benchmark

How to Use These Golf Calculators

Each calculator on this page is free to use with no sign-up required. Enter your data, adjust the inputs, and your result updates instantly. All calculators use verified formulas from the World Handicap System (WHS) and standard golf scoring rules.

Golf Calculator FAQ

The handicap calculator uses the official World Handicap System (WHS) formula: Score Differential = (113 ÷ Slope) × (Score − Course Rating), then averages the best differentials and multiplies by 0.96. Results are accurate estimates that closely match GHIN-issued handicaps for most golfers.

A Handicap Index is your portable playing ability number — the same everywhere. A Course Handicap converts your index into the actual strokes you receive at a specific course, adjusted for that course's difficulty using its Slope Rating.

Stableford scoring awards points per hole based on your score relative to par: 1 point for bogey, 2 for par, 3 for birdie, 4 for eagle. The highest total points wins. It rewards consistent play and limits the damage of one bad hole compared to stroke play.

GIR (Greens in Regulation) means reaching the green in the expected number of strokes — 2 shots on a par 4, 1 on a par 3. Higher GIR percentages strongly correlate with lower handicaps. Most mid-handicappers hit 4–6 GIR per round; scratch golfers typically hit 12–14.

This calculator estimates from any number of rounds. The official WHS requires a minimum of 3 rounds of 18 holes to establish an initial index. The index becomes more accurate as you add more rounds — it uses the best 8 of your last 20 differentials when fully established.