Greens in Regulation Calculator
Greens in regulation, or GIR, is the best single predictor of scoring. It counts holes where you reach the green with strokes to spare for two putts.
Calculate greens in regulation
Fill in the fields and select Calculate.
What you'll need
To use the greens in regulation calculator, have these figures ready:
- Greens hit in regulation — for example, 8.
- Holes played (optional) — for example, 18.
The calculator then returns the greens in regulation the moment you press calculate.
How it works
Greens in regulation = greens hit ÷ holes played × 100
You enter the greens hit in regulation, and the calculator returns the greens in regulation using the formula above.
When to Use
Use this Greens in Regulation (GIR) calculator to track approach shot accuracy. GIR is the statistic most strongly correlated with low scores in golf.
What the result tells you
A green is in regulation if you reach it in at least two strokes fewer than par, leaving room for two putts. It is the stat that correlates most strongly with handicap, because hitting greens gives you birdie and par chances. Tour players hit around two thirds of greens, while club golfers are usually well below half.
Benchmarks & Interpretation
Here is how typical results are categorized and interpreted:
| Value / Range | Rating | Description |
|---|---|---|
| Above 65% | Elite Approach | Exceptional iron play. Sets up consistent birdie attempts and avoids high scores. |
| 45% – 65% | Solid Player | Good control on approach shots. Reliable greenside control and iron contact. |
| Below 45% | Needs Work | Struggling with iron play. Focus on club selection, contact, and targets. |
Pro Tips & Advice
Increase your GIR by aiming for the center of the green on difficult holes rather than hunting pins tucked near hazards.
Step by step
- Enter the greens hit in regulation.
- Enter the holes played.
- Select Calculate to read the greens in regulation.
Worked example
Hitting 8 greens in regulation over 18 holes is 8 ÷ 18 × 100, about 44.4 percent.
Frequently asked questions
How is the greens in regulation worked out?
Greens in regulation = greens hit ÷ holes played × 100. Greens in regulation, or GIR, is the best single predictor of scoring. It counts holes where you reach the green with s…
How is a green in regulation defined?
You reach the green in the par minus two, so on a par four that means being on the green in two shots, leaving two putts for par.
What qualifies as a Green in Regulation?
A green is hit in regulation if any part of your ball rests on the putting surface in two strokes under par (e.g. 1 shot on a par-3, 2 shots on a par-4).
Why is GIR so important for golfers?
Landing on the green in regulation guarantees a birdie or par putt, removing difficult chipping and pitching saves from the equation.
How accurate is the Greens in Regulation Calculator?
The tool applies the standard formula exactly, so the result is only as accurate as the figures you enter. Double check your inputs, since a wrong number going in gives a wrong number coming out.
Is the Greens in Regulation Calculator free to use?
Yes. Every tool on GamersZone is free, with no account and no limit on how many times you calculate. The maths runs in your browser, so the numbers you enter are never sent to a server or stored.
How we calculate this
This tool applies the standard formula shown above. The calculation runs entirely in your browser, so the figures you enter are never stored.