Quick answer: Australia uses the exact same letter-based ring sizing scale as the UK, from A to Z — an Australian size N is identical to a UK size N, with no conversion needed between the two.
How Australian Ring Sizing Works
Australia doesn’t have its own separate ring sizing system — it uses the same letter-based scale as the UK and Ireland, standardized against the ring’s inside circumference in millimeters. That means any UK sizing chart, including the one on this site, applies directly to Australian sizes without any adjustment.
For the complete letter-by-letter breakdown, see our full UK Ring Size Chart — every size on it applies equally in Australia.
Australian Ring Size Chart
Since Australia shares the UK’s letter scale, this chart shows Australian/UK letters matched to their US equivalent and exact millimeter measurements.
| Australia / UK Size | US Equivalent | Inside Diameter | Inside Circumference |
| F | 3 | 14.1 mm | 44.2 mm |
| H | 4 | 14.9 mm | 46.8 mm |
| J | 5 | 15.7 mm | 49.3 mm |
| L | 6 | 16.5 mm | 51.9 mm |
| N | 7 | 17.3 mm | 54.4 mm |
| P | 8 | 18.1 mm | 57.0 mm |
| R | 9 | 18.9 mm | 59.5 mm |
| T | 10 | 19.7 mm | 62.1 mm |
| V | 11 | 20.5 mm | 64.6 mm |
| X | 12 | 21.3 mm | 67.2 mm |
How to Measure Your Ring Size in Australia
- Wrap a strip of string or paper around the base of your finger, mark where it overlaps, then measure that length in millimeters against a ruler.
- Match the measurement to the closest inside circumference in the chart above.
- Or measure the inside diameter of a ring that already fits and match it to the diameter column instead.
Our full measuring guide covers every method in detail, and our existing-ring tool converts a diameter instantly.
Average Ring Size for a Woman in Australia
Quick answer: The average ring size for a woman in Australia is about AU L — the same letter as the UK, since both share the identical scale and this matches an average US size 6.
Like any population average, this is a starting point, not a prediction for any individual finger. Actual size varies a lot from person to person, so always measure directly rather than assuming an average applies to you.
Average Ring Size Comparison: US, UK & Australia
Because all three systems describe the same underlying measurement — just on different scales — average sizes translate directly across them:
| Country | Average Women’s Size | Average Men’s Size |
| United States | US 6 (typically 5–7) | US 9–10 (typically 8–11) |
| United Kingdom | UK L (matches US 6) | UK R–T (matches US 9–10) |
| Australia | AU L (matches US 6) | AU R–T (matches US 9–10) |
See our World Comparison Chart for every size across every system side by side, or use our converter to convert any specific size instantly.
Frequently Asked Questions
Is Australian ring size the same as UK ring size?
Yes — Australia uses the identical letter-based scale as the UK, so an Australian N is also a UK N, with no conversion needed.
What is the average ring size for a woman in Australia?
About AU L, which matches the UK scale exactly and corresponds to an average US size 6.
What is the average ring size for a man in the UK or Australia?
Roughly R to T, matching an average US size of 9 to 10 — though individual size varies considerably.
How do I measure my ring size in Australia?
The same way as anywhere else — wrap a string or paper strip around your finger, measure the length in millimeters, and match it to the Australian/UK chart above, or use an existing ring that fits.
