Insider's Edit:Charles Fish Guide A Complete Guide to Buying Pre-Owned Jewellery When it comes to pre-owned fine jewellery, experience matters ā and at Charles Fish, ...
Read more...Not sure what ring size you are? Youāre not alone. Ring sizing can feel a bit confusing, especially if youāre buying online or choosing a surprise gift. The good news? There are several easy ways to work out your size - and most rings canbe resized if needed.
Measure the circumference of your finger and enter it below ā we'll tell you your exact UK ring size in seconds. No chart-reading needed.
Enter your finger measurement below
Browse the full UK ring size chart, including half sizes from G to Z. Switch between women's and men's sizes using the tabs below.
| Internal Diameter (mm) | UK Size (Letter) | US Size | EU Size (mm) |
|---|---|---|---|
| 14.5 | J | 4.75 | 49 |
| 14.8 | K | 5.25 | 50 |
| 15.2 | L | 5.75 | 52 |
| 15.6 | M | 6.25 | 53 |
| 16.4 | N | 6.75 | 55 |
| 16.8 | O | 7.25 | 57 |
| 17.2 | p | 7.75 | 58 |
| 17.4 | Q | 8.25 | 60 |
| 18 | r | 8.75 | 61 |
| 18.4 | s | 9.25 | 63 |
| 19 | T | 9.75 | 65 |
Every ring at Charles Fish includes its size in the product specification, so you always know exactly what you're buying before you check out.
Charles Fish uses UK ring sizing, which is shown as a letter, for example, K, L, M or N. This is the standard sizing system used by jewellers across the UK and Ireland.
Don't worry ā all rings come with 30-day free resizing. Buy with confidence and sort the perfect fit once it's been gifted.
UK sizes are based on the inner circumference of the ring, measured in millimetres, and are traditionally shown as letters rather than numbers. Each half size represents a very small difference, helping jewellers achieve a precise fit.
If youāre more familiar with US or European sizing, you can easily compare them using the chart:
Tip: If youāre between sizes, itās often best to size up slightly ā especially for wider bands
Yes, there are ring-sizing apps that use your phone screen to help you measure an existing ring. These can be useful as a starting point, but theyāre not always 100% accurate, so itās best to double-check with another method if you can.
You can. Wrap a piece of string or a thin strip of paper around the base of your finger, mark where it overlaps, then measure the length with a ruler. This gives you a circumference you can match to a ring size chart. Just donāt pull it too tight ā comfort is key.
Absolutely. Visiting a local jewellery shop is one of the best ways to get an accurate size. A jeweller can measure your finger properly and take into account things like knuckle size and band width.
If you have a ring that fits the finger perfectly, you can measure its inner diameter or take it to a jeweller to be sized. This is often the easiest and most accurate method.
Sometimes, yes. As a rough guide:
This isnāt exact, but it can be helpful if youāre estimating. You can also compare your dominant hand with your other hand: correlating fingers will be similar but with the fingers on theĀ hand you do most things with (i.e., your writing hand) being around ½ to 1 size bigger than the either.
Most plain metal rings, including gold, platinum and silver, can usually be resized up or down by one to two sizes without any issues. Simple bands are the easiest to adjust.
Some rings are very difficult or impossible to resize, including:
A jeweller can always advise on a case-by-case basis.
There are a few common ways resizing is done:
The method depends on the ring style and how much adjustment is needed.
Ring size isnāt fixed forever - lots of everyday factors can affect it.
Yes. Fingers are often smaller in winter due to the cold and can swell in warmer summer weather. Your size can even change slightly over the course of a single day.
Weight gain or loss can affect finger size, which means your ring might feel tighter or looser over time.
Definitely. Wider bands fit more snugly than thinner ones, so you may need a slightly larger size for a wide ring.
Ideally, somewhere in between.
Personal preference also plays a part. Some people like a snug fit that doesnāt move, while others prefer a ring they can turn around easily.
In many cases, yes - but not endlessly. Each resize slightly affects the metal, so there are limits depending on the ringās design and condition. A jeweller can advise whether further resizing is possible.
Unfortunately, once a ring has been resized, it is no longer eligible for return. Resizing is a permanent alteration made specifically to fit you, which means the piece cannot be restored to its original condition or resold. As a result, our standard returns policy no longer applies once this service has been carried out. If youāre unsure about sizing, we always recommend confirming your ring size before proceeding with any adjustments.
Every ring we sell comes with aĀ 30-day free resizing service. If your ring doesn't fit perfectly when it arrives, simply get in touch ā no fuss, no charge.
You can also visit us in store for a free in-person sizing appointment with one of our expert jewellers.