flat lay of ring sizing tools including a ring sizer and measuring tape, alongside a sterling silver memorial ring on a soft neutral background

The Complete Ring Sizing Guide: Find Your Perfect Fit

Choosing the right ring size is one of the most important steps when ordering any ring — especially a memorial ring that holds such deep personal significance. This guide will walk you through everything you need to know.


How to Measure Your Ring Size at Home

You don't need to visit a jeweller to find your size. Here are two simple methods:

Method 1: The String or Paper Method

  1. Cut a thin strip of paper or use a piece of string approximately 10cm long
  2. Wrap it snugly around the base of the finger you intend to wear the ring on
  3. Mark where the paper or string overlaps
  4. Measure the length in millimetres — this is your finger circumference
  5. Use the chart below to find your ring size

Method 2: Measure an Existing Ring

If you already have a ring that fits well:

  1. Place it flat on a ruler
  2. Measure the internal diameter in millimetres
  3. Match it to the diameter column in the chart below

Ring Size Conversion Chart

UK Size US Size EU Size Diameter (mm) Circumference (mm)
H 46 14.7 46.1
I 47 15.0 47.1
J 48 15.3 48.0
K 50 15.7 49.3
L 51 16.1 50.5
M 52 16.5 51.8
N 54 16.9 53.1
O 55 17.3 54.4
P 56 17.7 55.7
Q 57 18.2 57.2
R 59 18.6 58.4
S 60 19.0 59.7
T 61 19.4 61.0
U 10¼ 62 19.8 62.2
V 10¾ 64 20.2 63.5

Tips for Getting the Most Accurate Measurement

Getting your size right first time matters — here's how to avoid common mistakes:

  • Visit a professional jeweller — the most reliable way to find your ring size is to have your finger measured in person by a jeweller. Many offer this as a free service, and it takes just a few minutes. We strongly recommend this for bespoke, made-to-order pieces where getting the size right first time really matters.
  • Measure mid-afternoon — fingers are at their slimmest first thing in the morning and at their largest in the evening. Mid-afternoon gives you the most accurate everyday size to order from.
  • Avoid measuring in the cold — fingers shrink in cold temperatures and expand in warmth; measure at room temperature for the most accurate result
  • Measure the correct finger — ring sizes can vary between fingers and even between your left and right hand
  • Measure 2–3 times — take multiple measurements and use the average
  • Consider knuckle size — if your knuckle is larger than the base of your finger, size up slightly so the ring can pass over comfortably

Ring Sizing for Memorial Rings: What to Consider

Memorial rings are worn close to the heart, often every day. Here are a few extra things to keep in mind:

Wider bands fit smaller — if you're ordering a wider band style, consider going a size up from your usual size for a comfortable everyday fit.

Comfort fit settings — our memorial rings are designed with comfort in mind, but a well-fitted ring should slide on with slight resistance and sit snugly without pinching.

Made-to-order — because our rings are handcrafted to order and personalised with your inclusion, we strongly recommend taking your time to measure carefully before ordering. Resizing a memorial ring is complex and may not always be possible once the inclusion has been set.


A Gentle Note on Our Returns Policy

Because every Keepsake ring is bespoke and made especially for you, we are unable to accept returns or offer exchanges on made-to-order pieces where an incorrect size has been provided at the time of ordering. We ask that you take the time to follow our sizing guidance carefully before placing your order.

If you have any doubts at all about your size, please get in touch with us first — we are always happy to help and would much rather spend a little extra time with you beforehand than have you disappointed afterwards. You can read our full Returns Policy here.


Still Not Sure? We're Here to Help

If you're unsure about your ring size, please don't hesitate to get in touch before placing your order. We'd rather take a little extra time to get it right than have you receive a ring that doesn't fit perfectly.

You can also order a free ring sizer from us — just drop us a message and we'll pop one in the post.

At Keepsake Memorial Jewellery, every piece is crafted with care and intention. We want your memorial ring to feel as perfect as the memory it holds.


Ready to find your ring? Browse our full collection of memorial rings and take the first step towards carrying your loved one with you always.

  • Willow Ring — a delicate marquise memorial ring in 925 sterling silver
  • Halo Ring — an elegant oval solitaire with CZ stone
  • The Strata Ring — a handsome men's double channel memorial ring
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