Measure an existing ring
- Select one of your existing rings that fits your desired finger
- Measure the internal diameter of the ring (mm)
- Compare this against our chart below to find your perfect ring size.
Don't have a ring to measure? Measure your finger
- Wrap a piece of paper or string around your finger where you would like your ring to sit
- With a pen, mark where the string overlaps
- Stretch the length of the string against a ruler and record the length (mm). This will be your circumference.
- Use the below chart to determine your ring size.
LADIES RING SIZE GUIDE
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Inside diameter (mm) | Inside circumference (mm) | Australian Size | US Size |
14.65 | 46.02 | H | 3 3/4 |
14.86 | 46.68 | H 1/2 | 4 |
15.04 | 47.25 | I | 4 1/4 |
15.27 | 47.97 | I 1/2 | 4 1/2 |
15.4 | 48.38 | J | 4 5/8 |
15.7 | 49.32 | J 1/2 | 5 |
15.8 | 49.64 | K | 5 1/8 |
16 | 50.27 | K 1/2 | 5 3/8 |
16.1 | 50.58 | L | 5 1/2 |
16.41 | 51.55 | L 1/2 | 5 7/8 |
16.51 | 51.87 | M | 6 |
16.71 | 52.5 | M 1/2 | 6 1/4 |
16.92 | 53.16 | N | 6 1/2 |
17.13 | 53.82 | N 1/2 | 6 3/4 |
17.35 | 54.51 | O | 7 |
17.45 | 54.82 | O 1/2 | 7 1/4 |
17.75 | 55.76 | P | 7 1/2 |
17.97 | 56.45 | P 1/2 | 7 3/4 |
18.19 | 57.15 | Q | 8 |
18.35 | 57.65 | Q 1/2 | 8 1/4 |
18.61 | 58.47 | R | 8 5/8 |
18.8 | 59.06 | R 1/2 | 8 7/8 |
19.1 | 60 | S | 9 1/8 |
19.31 | 60.66 | S 1/2 | 9 3/8 |
19.51 | 61.29 | T | 9 5/8 |
19.84 | 62.33 | T 1/2 | 10 |
GENTS RING SIZE GUIDE
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Inside diameter (mm) | Inside circumference (mm) | Australian Size | US Size |
17.35 | 54.51 | O | 7 |
17.45 | 54.82 | O 1/2 | 7 1/4 |
17.75 | 55.76 | P | 7 1/2 |
17.97 | 56.45 | P 1/2 | 7 3/4 |
18.19 | 57.15 | Q | 8 |
15.7 | 49.32 | J 1/2 | 5 |
18.35 | 57.65 | Q 1/2 | 8 1/4 |
18.61 | 58.47 | R | 8 5/8 |
18.8 | 59.06 | R 1/2 | 8 7/8 |
19.1 | 60 | S | 9 1/8 |
19.31 | 60.66 | S 1/2 | 9 3/8 |
19.51 | 61.29 | T | 9 5/8 |
19.84 | 62.33 | T 1/2 | 10 |
20.02 | 62.89 | U | 10 1/4 |
20.2 | 63.46 | U 1/2 | 10 1/2 |
20.32 | 63.84 | V | 10 5/8 |
20.68 | 64.97 | V 1/2 | 11 |
20.94 | 65.78 | W 1/2 | 11 3/8 |
21.18 | 66.54 | X | 11 5/8 |
21.3 | 66.92 | X 1/2 | 11 7/8 |
21.49 | 67.51 | Y | 12 |
21.69 | 68.14 | Y 1/2 | 12 1/4 |
21.89 | 68.77 | Z | 12 1/2 |
22.1 | 69.43 | Z + 1/2 | 12 3/4 |
22.33 | 70.15 | Z + 1 | 13 |
22.6 | 71 | Z +1.5 | 13 1/2 |
Tips and tricks
- Your fingers shrink and expand throughout the day, it is best to measure your finger size at the end of the day.
- Make sure you measure the finger you intend to wear your ring on, each hand and finger may slightly differ in size.
- If you are in between sizes, we recommend sizing up.
- Ensure the size you have chosen allows enough room for the ring to easily pass along the entire finger.
- Please note, the style of ring will also impact the choice of size. A larger ring may sit looser than a finer ring.
Still not sure?
Visit us in store for a personalised sizing assessment where one of our fine jewellery specialists will help you find your best fit.