Your Complete Guide to Perfect Fit
Choosing the perfect ring is about more than design - the fit matters just as much. Whether you’re buying an engagement ring, wedding band, or a special fine jewellery piece, understanding ring sizes in the UK and internationally is essential.
UK Ring Sizes & International Conversions
Our ring sizing chart shows the standard UK sizes we use alongside international equivalents for the USA, Canada, Europe, and Japan.
To ensure that you get the best fit, we are happy to send you a ring sizing kit - just contact us.
Our standard ring sizes are L or M. Orders outside these sizes are treated as special orders and are non-refundable. Most rings can be resized - contact us for adjustments or sizing guidance.
|
UK |
USA & Canada |
Europe |
Japan |
Ring Diameter Inside MM |
|
J |
4 1/2 |
49 |
- |
15.4 |
|
K |
5 |
50 |
9 |
15.8 |
|
K 1/2 |
5 3/8 |
- |
10 |
16 |
|
L |
5 1/2 |
51 |
- |
16.1 |
|
M |
6 |
52 |
12 |
16.51 |
|
M 1/2 |
6 1/4 |
- |
- |
16.71 |
|
N |
6 1/2 |
53 |
13 |
16.92 |
|
N 1/2 |
6 3/4 |
54 |
- |
17.13 |
|
O |
7 |
55 |
14 |
17.35 |
|
O 1/2 |
7 1/4 |
- |
- |
17.45 |
|
P |
7 1/2 |
56 |
15 |
17.75 |
|
P 1/2 |
7 3/4 |
- |
- |
17.97 |
|
Q |
8 |
57 |
16 |
18.19 |
|
Q 1/2 |
8 1/4 |
58 |
- |
18.35 |
|
R |
8 5/8 |
59 |
- |
18.61 |
How to Measure Your Ring Size
Getting the correct ring size ensures comfort and elegance. Follow these tips for accurate sizing:
Engagement Rings: Measure the fourth finger of the left hand.
Band Width Matters: Rings with a wide band feel tighter - consider choosing a size up for comfort.
Time of Day: Finger sizes change throughout the day. Ideally measure in the evening and never when your hands are cold or very warm.
Fit & Comfort: Your ring should slide over the knuckle easily but remain snug enough to avoid slipping. When in doubt - size up. It's generally more comfortable to wear a ring that's slightly too large, than one that's too tight.
Existing Rings: Measuring a ring you already own that you wear on the correct finger is a useful reference. We can work from a ring that you or a partner have in order to take a sizing.
Ring Sizing Kits: Request a physical ring sizing kit from us. We are happy to send a kit or arrange a studio appointment for precise measurement.
For surprise engagements, check out our Guide To Surprise Proposals - perfect for keeping the moment a surprise.
If you’re unsure about your size or need guidance, contact us today to ensure your ring is a perfect fit. For more information read our jewellery care guide here.
