You may also like
Book an Appointment
Choosing the correct ring size is essential for comfort, security, and peace of mind, especially when buying a ring online. This Australian ring size guide will help you measure accurately from home using trusted and easy methods.
In Australia, ring sizes are measured using alphabetical sizing from A to Z rather than numerical measurements. This system is widely used across Australian jewellers and ensures consistency in fit.
All rings purchased from Diamonds For Everyone are made using Australian standard ring sizing.
Finding your ring size at home is simple and does not require special tools. With a few easy methods, you can measure accurately and choose a size that feels comfortable and secure for everyday wear.
For the most accurate fit, we recommend measuring at the end of the day and avoiding cold temperatures, as finger size can change slightly throughout the day.
| USA / Canada | UK / Australia | Japan / India / China | Spain / Italy | Inside Diameter & Circumference (mm) |
|---|---|---|---|---|
| 4.25 | AU I | 7.5 | 15.08 & 47.40 | |
| 4.5 | AU I½ | 8 | 8 | 15.29 & 48.00 |
| 4.75 | AU J | 8.75 | 15.49 & 48.70 | |
| 5 | AU J½ | 9 | 9.25 | 15.70 & 49.30 |
| 5.25 | AU K | 10 | 15.90 & 50.00 | |
| 5.5 | AU K½ | 10 | 10.5 | 16.10 & 50.60 |
| 5.75 | AU L | 11.25 | 16.31 & 51.20 | |
| 6 | AU L½ | 11 | 11.75 | 16.51 & 51.90 |
| 6.25 | AU M | 12 | 12.5 | 16.71 & 52.50 |
| 6.5 | AU M½ | 13 | 13.25 | 16.92 & 53.10 |
| 6.75 | AU N | 13.75 | 17.12 & 53.80 | |
| 7 | AU N½ | 14 | 14.5 | 17.32 & 54.40 |
| 7.25 | AU O | 15 | 17.53 & 55.10 | |
| 7.5 | AU O½ | 15 | 15.75 | 17.73 & 55.70 |
| 7.75 | AU P | 16.25 | 17.93 & 56.30 | |
| 8 | AU P½ | 16 | 17 | 18.14 & 57.00 |
| 8.25 | AU Q | 17.5 | 18.34 & 57.60 | |
| 8.5 | AU Q½ | 17 | 18.25 | 18.54 & 58.30 |
| 8.75 | AU R | 19 | 18.75 & 58.90 | |
| 9 | AU R½ | 18 | 19.5 | 18.95 & 59.50 |
| 9.25 | AU S | 20.25 | 19.15 & 60.20 | |
| 9.5 | AU S½ | 19 | 20.75 | 19.35 & 60.80 |
| 9.75 | AU T | 21.5 | 19.56 & 61.40 | |
| 10 | AU T½ | 20 | 22 | 19.76 & 62.10 |
| 10.25 | AU U | 21 | 22.75 | 19.96 & 62.70 |
| 10.5 | AU U½ | 22 | 23.25 | 20.17 & 63.40 |
| 10.75 | AU V | 24 | 20.37 & 64.00 | |
| 11 | AU V½ | 23 | 24.75 | 20.57 & 64.60 |
| 11.25 | AU W | 25.25 | 20.78 & 65.30 | |
| 11.5 | AU W½ | 24 | 26 | 20.98 & 65.90 |
| 11.75 | AU X | 26.5 | 21.18 & 66.60 | |
| 12 | AU X½ | 25 | 27.25 | 21.39 & 67.20 |
| 12.25 | AU Y | 27.75 | 21.59 & 67.80 | |
| 12.5 | AU Y½ | 26 | 28.5 | 21.79 & 68.50 |
| 12.75 | AU Z | 29 | 22.00 & 69.10 |
If you don’t have a ring to measure, using a ring sizer tape is one of the most accurate ways to determine your ring size at home. It allows you to measure your finger comfortably and ensures a precise fit when ordering engagement rings or custom jewellery.
Diamonds For Everyone can provide a professional ring sizer tape so you can measure your finger accurately from the comfort of your home.
Contact us to request a ring sizer and our team will arrange delivery for you.
Fill out the form below with your name and address, and we’ll send it to you, Australian Customers Only