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Golf ball size: Ø42.67 mm minimum, 45.93 g maximum (R&A / USGA)
What is the diameter of a golf ball? · Standard part · basis: R&A Rules of Equipment Part 4 (same limits in the USGA rules)
Also called: golf ball diameter, golf ball dimensions, golf ball size mm
Exact dimensions. True size, with no printing tolerance added.
- length
- 42.67 mm
- width
- 42.67 mm
- height
- 42.67 mm
Notes
- Diameter not less than 1.680 in (42.67 mm); weight not more than 1.620 oz (45.93 g).
- Dimples are not modelled: holders, tees and displays need only the envelope; give 0.5 mm clearance.
Golf ball size: Ø42.67 mm minimum, 45.93 g maximum size chart
| limit | inch / oz | mm / g |
|---|---|---|
| minimum diameter | 1.680 in | 42.67 |
| maximum weight | 1.620 oz | 45.93 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| R&A | Rules of Equipment, Part 4: conformance of balls | web | Publisher's page; dimensions are facts |
| USGA | Equipment rules: balls | web | Publisher's page; dimensions are facts |
Free files
★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
Let your AI pull this. Add
Set it up →https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=golf-ball

Fits with
Questions
How big is a golf ball?
At least 42.67 mm (1.68 in) across.
