Greens in Regulation Calculator
Calculate greens in regulation (GIR) percentage from greens hit and holes played — the ball-striking stat that most strongly predicts scoring.
How it works
GIR % = greens hit in regulation ÷ holes played × 100
A green is hit “in regulation” when your ball is on the putting surface with at least two putts to spare — the first shot on a par 3, the second on a par 4, or the third on a par 5. GIR percentage is the strongest single predictor of scoring because every green hit sets up a realistic birdie chance and removes the scrambling that inflates scores. Tour pros hit around 65% of greens; a mid-handicap amateur often lands nearer 25–35%, which is why approach play is the fastest route to lower scores.
Worked example
A golfer hits 9 greens in regulation over an 18-hole round. GIR % = 9 ÷ 18 × 100 = 50% — well above the typical amateur and a strong ball-striking day.
Frequently asked questions
What exactly counts as a green in regulation?
Your ball must rest on the putting green after playing at least two strokes fewer than par: one shot on a par 3, two on a par 4, three on a par 5. The fringe does not count — the ball has to be on the green itself.
What GIR percentage should I aim for?
PGA Tour players hit roughly 65% of greens. Scratch amateurs land near 55–60%, mid-handicappers around 25–35%, and higher handicaps below that. Raising your GIR rate is usually the single most effective way to shoot lower scores.
Does hitting more greens guarantee lower scores?
It strongly correlates, but putting and short game still decide the number on the card. A golfer with high GIR but poor putting can waste the birdie chances; even so, more greens hit means fewer scrambling situations and a lower scoring ceiling.
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This calculator is for educational purposes. Double-check important results before acting on them.