Find your perfect fit with confidence. Our comprehensive guide walks you through every method — at home or in-studio.
The most accurate measurement is done in-store with professional ring sizers. However, there are reliable at-home methods that work beautifully when visiting isn't possible.
Wrap a thin strip of paper or piece of string around the base of your finger. Mark where the ends meet, then measure the length in millimetres against a ruler. This is your circumference.
Place a ring that fits well on a piece of paper and trace the inside circle. Measure the diameter (straight across the inside) in millimetres. Use our conversion chart below to find your size.
Visit us at Bondi Beach for a complimentary professional ring sizing. Our jewellers use precision ring sizers to determine your exact size across multiple measurements.
Enter your finger circumference or diameter and instantly see your size across all major international sizing systems.
Enter your finger measurement in millimetres below
Use this chart to convert between Australian, US, European and diameter measurements.
| Australia / UK | USA / Canada | Europe | Diameter (mm) | Circumference (mm) |
|---|---|---|---|---|
| F | 3 | 44 | 14.0 | 44.0 |
| H | 3.5 | 46 | 14.7 | 46.2 |
| J | 4.5 | 48 | 15.3 | 48.0 |
| K | 5 | 49 | 15.6 | 49.0 |
| L | 5.5 | 51 | 16.2 | 51.0 |
| M | 6 | 52 | 16.5 | 52.0 |
| N | 6.5 | 54 | 17.2 | 54.0 |
| O | 7 | 55 | 17.5 | 55.0 |
| P | 7.5 | 56 | 17.8 | 56.0 |
| Q | 8 | 57 | 18.2 | 57.2 |
| R | 8.5 | 58 | 18.5 | 58.3 |
| S | 9 | 59 | 18.8 | 59.1 |
| T | 9.5 | 61 | 19.4 | 61.0 |
| U | 10 | 62 | 19.8 | 62.1 |
| V | 10.5 | 63 | 20.1 | 63.1 |
| W | 11 | 65 | 20.7 | 65.0 |
Fingers are smallest in the morning and can swell by up to half a size in the evening. Measure mid-afternoon for the most representative result.
Cold weather causes fingers to shrink; heat causes them to expand. Try to measure when you're at a comfortable room temperature.
If your knuckle is larger than the base of your finger, size for the knuckle and have the ring adjusted for a snug fit at the base.
Wider bands (6mm+) fit more snugly. If choosing a wider ring, consider sizing up half a size from your standard measurement.
Our Bondi Beach studio offers complimentary professional ring sizing. No appointment necessary — just come in and we'll take care of you.
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