How to measure Ring Size: Ring Size Chart
When shopping for a diamond ring one of the important factors to consider is ring size. We know it’s not always easy to guess the ring size – especially when things like engagement rings are surprises, but we have some hints and tips to help you get it right.
Don’t worry however, if you do purchase the wrong ring size, we’ll give you a free resize within 60 days of receiving your item. Or in the future, if you finger size changes, we can amend your ring for a fee of £60.
Do you have a ring that you can measure?
| Measure the ring | Use our online tool |
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Hints & Tips
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Unable to get a ring to measure?
Sometimes it’s impossible to find out the size if the intended wearer has no jewellery or if discretion is key. If this is the case, we offer the opportunity to choose ‘Not Sure’ as an option based on the assumption of a Small, Average, or Large selection.
Selecting a “Not Sure” finger size
Small
If you think the wearer has small sized hands, we produce our Small size to approximately J/K.
Average
If you think the wearer has average sized hands, we produce our Average size to approximately M/N.
Large
If you think the wearer has large sized hands, we produce our Large size to approximately P/Q.
| Our ‘Not Sure’ fingers sizes are based on known industry averages and are provided so that for the purpose of proposing or gifting, that the ring should go on the finger. They are approximate sizes and likely to need resizing. |
Is the ring for you or can you measure the recipient?
The most accurate way of getting a finger size would be to have a jewellery professional check your finger size. Why not book into our London or Manchester showrooms and one of our team will be happy to help.
Alternatively, you can visit any local jewellery store, as sizes are universal and they’ll be able to help you.
If visiting a jewellery store is not an option for you, then order one of our ring sizers for free via our online request page.
| Resizing is straightforward and your ring will be returned within 3-5 working days unless it has to be remade due to the size change. |
| Each ring undergoes the strictest quality control checks and the quality of your ring will not be affected because of the re-sizing process. |
| If you’re going to return something for resize, please read our Resizing page as you are required to fill in the appropriate form. |
Ring Size Chart: UK v US Ring Sizes & Ring Sizes in MM
| United Kingdom, Ireland, and Australia | United States and Canada | Inside diameter (mm) | European Size, Inside Circumference (mm) | China, Japan | Switzerland |
|---|---|---|---|---|---|
| – | 0000 | 9.91 | 31.13 | – | – |
| – | 00 | 10.72 | 33.68 | – | – |
| – | 0 | 11.53 | 36.22 | – | – |
| A | 1/2 | 11.95 | 37.54 | – | – |
| A 1/2 | 3/4 | 12.18 | 38.26 | – | – |
| B | 1 | 12.37 | 38.86 | 1 | – |
| B 1/2 | 1 1/4 | 12.60 | 39.58 | – | – |
| C | 1 1/2 | 12.78 | 40.15 | – | – |
| C 1/2 | 1 3/4 | 13.00 | 40.84 | – | – |
| D | 2 | 13.21 | 41.50 | 2 | 1 1/2 |
| D 1/2 | 2 1/4 | 13.41 | 42.13 | – | – |
| E | 2 1/2 | 13.61 | 42.76 | 3 | 2 3/4 |
| E 1/2 | 2 3/4 | 13.83 | 43.45 | – | – |
| F | 3 | 14.05 | 44.14 | 4 | 4 |
| F 1/2 | 3 1/8 | 14.15 | 44.45 | – | – |
| G | 3 3/8 | 14.36 | 45.11 | 5 | 5 1/4 |
| G 1/2 | 3 5/8 | 14.56 | 45.74 | 6 | – |
| H | 3 3/4 | 14.65 | 46.10 | – | 6 1/2 |
| H 1/2 | 4 | 14.86 | 46.68 | 7 | – |
| I | 4 1/4 | 15.04 | 47.40 | – | 7 3/4 |
| I 1/2 | 4 1/2 | 15.27 | 48.00 | 8 | – |
| J | 4 5/8 | 15.40 | 48.70 | – | 9 |
| J 1/2 | 5 | 15.70 | 49.30 | 9 | – |
| K | 5 1/8 | 15.80 | 50.00 | – | 10 |
| K 1/2 | 5 3/8 | 16.00 | 50.60 | 10 | – |
| L | 5 1/2 | 16.10 | 51.20 | – | 11 3/4 |
| L 1/2 | 5 7/8 | 16.41 | 51.85 | – | – |
| M | 6 | 16.51 | 52.50 | 12 | 12 3/4 |
| M 1/2 | 6 1/4 | 16.71 | 53.10 | – | – |
| N | 6 1/2 | 16.92 | 53.80 | 13 | 14 |
| N 1/2 | 6 3/4 | 17.13 | 54.40 | – | – |
| O | 7 | 17.35 | 55.00 | 14 | 15 1/4 |
| O 1/2 | 7 1/4 | 17.45 | 55.70 | – | – |
| P | 7 1/2 | 17.75 | 56.20 | 15 | 16 1/2 |
| P 1/2 | 7 3/4 | 17.97 | 56.80 | – | – |
| Q | 8 | 18.19 | 57.40 | 16 | 17 3/4 |
| Q 1/2 | 8 1/4 | 18.35 | 58.00 | – | – |
| R | 8 5/8 | 18.61 | 58.90 | – | 19 |
| R 1/2 | 8 7/8 | 18.80 | 59.40 | – | – |
| S | 9 1/8 | 19.10 | 60.00 | – | 20 1/4 |
| S 1/2 | 9 3/8 | 19.31 | 60.66 | – | – |
| T | 9 5/8 | 19.51 | 61.29 | – | 21 1/2 |
| T 1/2 | 10 | 19.84 | 62.33 | 20 | – |
| U | 10 1/4 | 20.02 | 62.89 | 21 | 22 3/4 |
| U 1/2 | 10 1/2 | 20.20 | 63.46 | 22 | – |
| V | 10 5/8 | 20.32 | 63.84 | – | 23 3/4 |
| V 1/2 | 11 | 20.68 | 64.97 | 23 | – |
| W | 11 1/8 | 20.76 | 65.22 | – | 25 |
| W 1/2 | 11 3/8 | 20.94 | 65.78 | – | – |
| X | 11 5/8 | 21.18 | 66.54 | – | 26 1/4 |
| X 1/2 | 11 7/8 | 21.30 | 66.92 | – | – |
| Y | 12 | 21.49 | 67.51 | 25 | 27 1/2 |
| Y 1/2 | 12 1/4 | 21.69 | 68.14 | – | – |
| Z | 12 1/2 | 21.89 | 68.77 | 26 | 28 3/4 |
| Z +1/2 | 12 3/4 | 22.10 | 69.43 | – | – |
| Z+1 | 13 | 22.33 | 70.15 | 27 | – |
| Z+1.5 | 13.5 | 22.60 | 71.00 | – | – |
| Z+2 | – | 22.69 | 71.28 | – | – |
| Z+2.5 | – | 22.92 | 72.00 | – | – |
| Z+3 | – | 23.06 | 72.45 | – | – |
| Z+3.5 | – | 23.24 | 73.01 | – | – |
| Z+4 | – | 23.47 | 73.73 | – | – |
| Z+4.5 | – | 23.55 | 73.98 | – | – |
| Z+5 | – | 23.87 | 74.99 | – | – |
| Z+6 | – | 24.27 | 76.25 | – | – |
