Ring Sizing and Resizing
Ring Size Conversion Chart
The following chart displays approximate ring size conversions from UK sizes. If you'd like to order a ring in a non UK size, it's best to contact us in advance of placing your order so that Lilia can design your ring using the most accurate sizing possible.
UK, IRE, AUS, NZ | USA, CAN, MEX | ITA, ESP, CH | Inside Diameter (mm) | Inside Circumference (mm) |
E | 2½ | 3 | 13.67 | 42.9 |
E½ | 2¾ | 3.5 | 13.87 | 43.6 |
F | 3 | 4.25 | 14.07 | 44.2 |
F½ | 3¼ | 4.75 | 14.27 | 44.8 |
G | 3½ | 5.5 | 14.48 | 45.5 |
G½ | 3¾ | 6 | 14.68 | 46.1 |
H | 4 | 6.75 | 14.88 | 46.8 |
H½ | 4¼ | 7.5 | 15.09 | 47.4 |
I | 4½ | 8 | 15.29 | 48 |
J | 4¾ | 8.75 | 15.49 | 48.7 |
J½ | 5 | 9.25 | 15.7 | 49.3 |
K | 5¼ | 10 | 15.9 | 50 |
K½ | 5½ | 10.5 | 16.1 | 50.6 |
L | 5¾ | 11.25 | 16.31 | 51.2 |
L½ | 6 | 11.75 | 16.51 | 51.9 |
M | 6¼ | 12.5 | 16.71 | 52.5 |
M½ | 6½ | 13.25 | 16.92 | 53.1 |
N | 6¾ | 13.75 | 17.12 | 53.8 |
N½ | 7 | 14.5 | 17.32 | 54.4 |
O | 7¼ | 15 | 17.53 | 55.1 |
O½ | 7½ | 15.75 | 17.73 | 55.7 |
P | 7¾ | 16.25 | 17.93 | 56.3 |
P½ | 8 | 17 | 18.14 | 57 |
Q | 8¼ | 17.5 | 18.34 | 57.6 |
Q½ | 8½ | 18.25 | 18.54 | 58.3 |
R | 8¾ | 19 | 18.75 | 58.9 |
R½ | 9 | 19.5 | 18.95 | 59.5 |
S | 9¼ | 20.25 | 19.15 | 60.2 |
S½ | 9½ | 20.75 | 19.35 | 60.8 |
T | 9¾ | 21.5 | 19.56 | 61.4 |
T½ | 10 | 22 | 19.76 | 62.1 |
U | 10¼ | 22.75 | 19.96 | 62.7 |
U½ | 10½ | 23.25 | 20.17 | 63.4 |
V | 10¾ | 24 | 20.37 | 64 |
V½ | 11 | 24.75 | 20.57 | 64.6 |
W | 11¼ | 25.25 | 20.78 | 65.3 |
W½ | 11½ | 26 | 20.98 | 65.9 |
X | 11¾ | 26.5 | 21.18 | 66.6 |
X½ | 12 | 27.25 | 21.39 | 67.2 |
Y | 12¼ | 27.75 | 21.59 | 67.8 |
Z | 12½ | 28.5 | 21.79 | 68.5 |
Z½ | 12¾ | 29 | 22 | 69.1 |
Ring Sizing Information
Before placing an order please read the following guidelines, to ensure your ring measurement is correct. If you have a question not answered below, please do not hesitate to contact us.
Can you make rings in any size?
Yes, we can make rings in full, half or even quarter sizes. We use UK, US and EU ring sizing tools to ensure the ring is the correct size for each geographical area.
Standard sizes are offered in each listing, in UK sizes G - W. For plus sizes, from W 1/2 to Z plus 5, please contact us for a quote.
I don't know my ring size, can you help?
Ring sizes can be quite tricky to get absolutely right unless they are measured properly using a professional ring gauge. Some of the tools that we find people are using online are not that accurate, which include paper ring charts, and placing an existing ring over a circle on your screen, which means you may end up having a ring made specially for you that doesn't fit you perfectly. The best way to find out your ring size is with a metal ring gauge. You can either visit a high street jeweller or rent one via our finger measuring gauge below -

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Loan of Ring Gauge - fee refunded when you place an order with us
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Resizing Rings
Are you able to resize Lilia Nash rings?
We are able to resize most of our in stock engagement ring designs between 1-3 sizes (up or down), sometimes more, depending on the design.
I am not able to resize rings with gemstones flush set or pave set into the actual band, as resizing may displace the stones.
For in stock engagement/solitaire rings - resizing is free of charge on non sale items for the first resizing within 30 days from order, or £35 after 30 days. Return postage is payable by the customer.
For sale items Rings can be adjusted free of charge to a smaller size or for a fee to larger sizes (fee dependent on size required). Return postage is payable by the customer.
For made to order or bespoke engagement/solitaire rings -
Where the incorrect size was provided by the customer, a £35 resizing fee (plus postage) is payable to resize rings any size smaller, or half a size larger. For more than half a size larger, the resizing fee will be dependant on the size required. It is not advisable to resize the ring several times as it may weaken the band.
Plain platinum and gold wedding bands over 1.5mm can be adjusted to any size.
We are not able to resize -
Rings with gemstones flush set or pave set into the actual band; Birthstone stacking rings; Resize bands 1.5mm or less upwards;
If resizing made to order bands downwards or 1/2 a size up, the work will be carried out for £35 plus return postage to pay. If resizing to a larger size (larger than 1/2 size), the price will be advised depending
on the final size. In stock bands will be adjusted free of charge within 30 days of receipt.
Please note that stock rings that have been requested to be resized cannot be returned for a refund/exchange.
Special Delivery return postage is additional to the above.