Find your ring size in Canberra, ACT โ full AU/UK letter chart with US, EU conversions, inside diameter, circumference in mm, and a free size calculator
Canberra uses the standard Australian ring sizing system โ letters A through Z, the same as the UK system. The most common women's size is AU/UK size MโN (US 6.25โ6.75, EU 52.5โ54, diameter 16.7โ17.1 mm). For men the most common is AU/UK size RโT (US 8.75โ9.75, EU 59โ61.5). Canberra's cold winters and warm summers can affect finger size by up to half a letter โ always measure at room temperature for the most reliable year-round fit.
Thumbs are the widest finger. Thumb rings must be sized to pass comfortably over the knuckle.
Slightly larger than the ring finger on the same hand. Go up half a letter for a comfortable fit.
Similar in size to the index finger. Usually the largest of the three centre fingers.
The primary sizing finger. Average AU N (US 6.75). Engagement and wedding rings are worn here.
The smallest finger. Pinky rings may need specialist sizing for petite AU FโH sizes.
Highlighted rows represent the most commonly purchased ring sizes in the ACT. AU ring sizes use the same letter system as UK sizes โ UK size N equals AU size N with no conversion required.
| ๐ฆ๐บ AU / UK Size | ๐บ๐ธ US Size | ๐ช๐บ EU Size | Diameter (mm) | Circumference (mm) | Fit Guide |
|---|---|---|---|---|---|
| F | 3 | 44 | 14.1 mm | 44.3 mm | XS / Petite |
| G | 3.5 | 45 | 14.5 mm | 45.6 mm | Petite |
| H | 4 | 47 | 14.9 mm | 46.8 mm | Petite |
| I | 4.5 | 48 | 15.3 mm | 48.1 mm | Small |
| J | 4.75 | 49 | 15.5 mm | 48.7 mm | Small |
| K โญ | 5.25 | 50 | 15.9 mm | 49.9 mm | Popular โ |
| L | 5.75 | 51 | 16.3 mm | 51.2 mm | Popular โ |
| M โญ | 6.25 | 52.5 | 16.7 mm | 52.5 mm | Most Common โ |
| N ๐ | 6.75 | 54 | 17.1 mm | 53.8 mm | Most Common โ |
| O โญ | 7.25 | 55 | 17.5 mm | 55.0 mm | Popular โ |
| P | 7.75 | 56.5 | 17.9 mm | 56.3 mm | Popular โ |
| Q โญ | 8.25 | 57.5 | 18.3 mm | 57.5 mm | Popular โ |
| R ๐ | 8.75 | 59 | 18.7 mm | 58.7 mm | Most Common โ |
| S ๐ | 9.25 | 60 | 19.1 mm | 60.0 mm | Most Common โ |
| T โญ | 9.75 | 61.5 | 19.5 mm | 61.3 mm | Popular โ |
| U | 10.25 | 62.5 | 19.9 mm | 62.5 mm | Popular โ |
| V | 10.75 | 64 | 20.3 mm | 63.8 mm | Popular โ |
| W | 11.25 | 65 | 20.7 mm | 65.0 mm | Large |
| X | 11.75 | 66.5 | 21.1 mm | 66.3 mm | Large |
| Z | 12.5 | 68 | 21.6 mm | 67.9 mm | XL |
| AU / UK Size | ๐บ๐ธ US Size | ๐ช๐บ EU Size | ๐ฏ๐ต Japan | Diameter (mm) |
|---|---|---|---|---|
| K | 5.25 | 50 | 10 | 15.9 mm |
| L | 5.75 | 51 | 11 | 16.3 mm |
| M โญ | 6.25 | 52.5 | 12 | 16.7 mm |
| N ๐ | 6.75 | 54 | 13 | 17.1 mm |
| O โญ | 7.25 | 55 | 14 | 17.5 mm |
| P | 7.75 | 56.5 | 15 | 17.9 mm |
| Q | 8.25 | 57.5 | 16 | 18.3 mm |
| R ๐ | 8.75 | 59 | 17 | 18.7 mm |
| S โญ | 9.25 | 60 | 18 | 19.1 mm |
| T | 9.75 | 61.5 | 19 | 19.5 mm |
Canberra experiences one of Australia's coldest urban winters. Cold temperatures cause fingers to contract, making rings feel noticeably looser from June through August than in summer.
Summer temperatures in the ACT regularly exceed 35ยฐC. Heat causes fingers to swell, sometimes shifting your ring size up by half an AU letter. Avoid sizing at peak afternoon heat.
Fingers are at their smallest in the morning and largest in the evening after activity. Always measure late afternoon or evening for the most comfortable all-day fit.
Your dominant hand's fingers are typically half a letter size larger due to greater muscle development. Always measure the specific finger on the specific hand the ring will be worn on.
Rings wider than 6mm fit noticeably tighter than narrow bands at the same AU letter size. For wide-band wedding rings, order half a letter size larger than your measured ring finger size.
Significant weight changes, pregnancy, and natural ageing all alter ring size over time. If more than 2โ3 years have passed since your last sizing, always re-measure before ordering a new ring.
Cut a strip approximately 1 cm wide and 10 cm long from a piece of paper or card. A length of non-stretch dental floss or thread works equally well.
Wrap snugly around the base of the finger you will wear the ring on. Ensure the strip can still slide past the knuckle โ if not, measure at the widest point of the knuckle instead and round up half a size.
Use a pen to mark exactly where the strip overlaps. The length from the end of the strip to that mark is your finger circumference in millimetres.
Lay the marked strip flat against a rigid mm ruler. Note the measurement and enter it into the Canberra Ring Size Calculator above for your instant AU result.
Find your circumference in the AU size chart above and read across for the matching US, EU, and Japan equivalent sizes for international orders.
Select a ring that fits the correct finger on the correct hand comfortably. Do not use a ring from the opposite hand as sizing may differ by half a letter.
Use a mm ruler to measure straight across the inside opening of the ring in millimetres. This gives you the inner diameter of the ring.
Find the corresponding diameter in the full AU size chart above and read across for your AU/UK letter, US size, and EU size.
Canberra's wide seasonal temperature range makes accurate ring sizing more important than in most Australian cities. These are the most common mistakes that result in an incorrectly sized ring.
Canberra winters can reach sub-zero temperatures. Fingers measured in cold conditions will be noticeably smaller than their warm-weather size, resulting in a ring that feels too tight in summer.
Fingers are at their narrowest first thing in the morning. A morning measurement will often produce a ring size that is half a letter too small, causing discomfort by the end of the day.
The dominant hand's ring finger is typically half a letter larger than the non-dominant hand. Always measure the exact hand the ring will be worn on for accurate sizing.
Some UK retailers list half-letter sizes such as Nยฝ. Standard AU sizing uses whole letters only. Confirm whether your online retailer uses half sizes before placing an order from Canberra.
Elastic or cloth tape measures compress unevenly against the finger and give unreliable readings. Always use a non-stretch paper strip and measure against a rigid millimetre ruler for accuracy.
US, EU, Japanese, and Indian ring sizes all use different scales from AU letters. Always confirm which size system a retailer uses before purchasing any ring from an international online store.