Free printable AU ring size chart โ actual-size ring circles, full AU/US/EU/UK conversion table, paper strip sizer ruler, and step-by-step instructions. Print at 100% / actual size only
Place your existing ring over the printed circles. Find the circle where the inside edge of your ring aligns perfectly with the printed circle's inner edge. The AU letter beside that circle is your ring size. This is the most accurate printable method.
Cut out the paper strip ruler printed at the bottom of the chart. Wrap it snugly around your ring finger, mark the overlap with a pen, then measure that length in mm. Match the mm reading to the circumference column in the conversion table.
Measure the inner diameter of an existing ring using a ruler or digital calipers. Enter that mm value into the Diameter column of the conversion table below to find your AU letter size. Calipers (available from hardware stores for under $15) give the most precise reading.
Use the free AU ring size calculator on this page. Enter your finger circumference in mm, inner diameter in mm, or your US ring size number and get your AU letter size instantly with full conversion to EU, UK, and India sizing.
| ๐ฆ๐บ AU / UK / NZ | ๐บ๐ธ US / CA | ๐ช๐บ EU (mm) | ๐ฎ๐ณ India | Diameter (mm) | Circumference (mm) | Typical Wearer |
|---|---|---|---|---|---|---|
| F | 3 | 44.2 | 4 | 14.1 mm | 44.2 mm | ๐ฉ Small Women |
| Fยฝ | 3ยผ | 44.8 | โ | 14.3 mm | 44.8 mm | ๐ฉ Small Women |
| G | 3ยฝ | 45.5 | 5 | 14.5 mm | 45.5 mm | ๐ฉ Small Women |
| Gยฝ | 3ยพ | 46.1 | โ | 14.7 mm | 46.1 mm | ๐ฉ Small Women |
| H | 4 | 46.8 | 7 | 14.9 mm | 46.8 mm | ๐ฉ Small Women |
| Hยฝ | 4ยผ | 47.4 | โ | 15.1 mm | 47.4 mm | ๐ฉ Small Women |
| I | 4ยฝ | 48.0 | 8 | 15.3 mm | 48.0 mm | ๐ฉ Women |
| Iยฝ | 4ยพ | 48.7 | โ | 15.5 mm | 48.7 mm | ๐ฉ Women |
| J | 5 | 49.3 | 9 | 15.7 mm | 49.3 mm | ๐ฉ Women |
| Jยฝ | 5ยผ | 50.0 | โ | 15.9 mm | 50.0 mm | ๐ฉ Women |
| K | 5ยฝ | 50.6 | 10 | 16.1 mm | 50.6 mm | ๐ฉ Women |
| Kยฝ | 5ยพ | 51.2 | โ | 16.3 mm | 51.2 mm | ๐ฉ Women |
| L | 6 | 51.9 | 12 | 16.5 mm | 51.9 mm | ๐ฉ Avg Women |
| Lยฝ | 6ยผ | 52.5 | โ | 16.7 mm | 52.5 mm | ๐ฉ Avg Women |
| M | 6ยฝ | 53.1 | 13 | 16.9 mm | 53.1 mm | ๐ฉ Avg Women |
| Mยฝ | 6ยพ | 53.8 | โ | 17.1 mm | 53.8 mm | ๐ฉ Avg Women |
| N | 7 | 54.4 | 14 | 17.3 mm | 54.4 mm | ๐ฉ Avg Women |
| Nยฝ | 7ยผ | 55.1 | โ | 17.5 mm | 55.1 mm | ๐ซ Unisex |
| O | 7ยฝ | 55.7 | 15 | 17.7 mm | 55.7 mm | ๐ซ Unisex |
| Oยฝ | 7ยพ | 56.3 | โ | 17.9 mm | 56.3 mm | ๐ซ Unisex |
| P | 8 | 57.0 | 16 | 18.1 mm | 57.0 mm | ๐ซ Unisex |
| Pยฝ | 8ยผ | 57.6 | โ | 18.3 mm | 57.6 mm | ๐ซ Unisex |
| Q | 8ยฝ | 58.3 | 17 | 18.5 mm | 58.3 mm | ๐จ Men |
| Qยฝ | 8ยพ | 58.9 | โ | 18.8 mm | 58.9 mm | ๐จ Men |
| R | 9 | 59.5 | 18 | 18.9 mm | 59.5 mm | ๐จ Men |
| Rยฝ | 9ยผ | 60.2 | โ | 19.2 mm | 60.2 mm | ๐จ Men |
| S โญ | 9ยฝ | 60.8 | 19 | 19.4 mm | 60.8 mm | โญ Avg Men |
| T โญ | 9ยพ | 61.4 | 21 | 19.6 mm | 61.4 mm | โญ Most Common |
| Tยฝ โญ | 10 | 62.1 | 21 | 19.8 mm | 62.1 mm | โญ Most Common |
| U | 10ยผ | 62.7 | 22 | 20.0 mm | 62.7 mm | ๐จ Large Men |
| Uยฝ | 10ยฝ | 63.4 | 23 | 20.2 mm | 63.4 mm | ๐จ Large Men |
| V | 10ยพ | 64.0 | 24 | 20.4 mm | 64.0 mm | ๐จ Large Men |
| Vยฝ | 11 | 64.6 | 24 | 20.6 mm | 64.6 mm | ๐จ Large Men |
| W | 11ยผ | 65.3 | 25 | 20.8 mm | 65.3 mm | ๐จ Large Men |
| X | 11ยพ | 66.6 | 26 | 21.2 mm | 66.6 mm | ๐ XL Men |
| Y | 12ยผ | 67.9 | โ | 21.6 mm | 67.9 mm | ๐ XL Men |
| Z | 12ยพ | 69.1 | โ | 22.0 mm | 69.1 mm | ๐ฃ XXL Men |
| Z+1 | 13ยผ | 70.7 | โ | 22.5 mm | 70.7 mm | ๐ฃ XXL Men |
| Z+2 | 14 | 72.0 | โ | 22.9 mm | 72.0 mm | ๐ฃ Custom |
Enter your finger circumference (paper strip reading in mm), inner diameter of an existing ring, or your US ring size
Printer paper or cardstock works best. Avoid tissue paper or any stretchy material as these compress and give inaccurate readings. The strip needs to be stiff enough to hold its shape when marked.
In Australia, engagement and wedding rings are worn on the left ring finger. Wrap so the paper is snug but comfortable โ like a well-fitted ring, not tight. You should be able to slide the paper very slightly.
Never remove the strip before marking โ it loosens immediately. Use a fine-tip pen for accuracy. A thick or smudged mark can add 2 mm of error to your reading, potentially shifting you a full AU size.
Lay the strip flat on a ruler. Your circumference reading in mm is your key measurement. Look up this number in the Circumference column of the conversion chart, or enter it into the calculator above.
Finger size varies throughout the day. Measure morning, midday, and afternoon. Average the three mm readings. If your average falls between two AU sizes, always choose the larger letter for comfortable everyday wear.