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How to measure a ring size?

 

How to Choose the Right Ring Size? 

Finding the perfect ring size is key to comfort  — whether you’re choosing an engagement ring, a meaningful gift, or everyday jewellery. A well-fitted ring not only looks beautiful, but also feels great to wear.

 

The Most Accurate Way: Visit a Jeweller

The most precise option is to visit a local jeweller, who can measure your finger or an existing ring using the standard European ring sizing system. This is the best method — especially if you’re buying an engagement ring or a gift for someone special.

 

Measuring-ring-diameter-ruler

 

How to Measure Your Ring Size at Home

Can’t visit a jeweller? No problem — here are two simple methods you can try at home:

1. String or a thin strip of paper

– Wrap it around your finger where the ring will sit
– Mark the spot where the ends meet and measure the length in millimetres
– Compare the result with our ring size chart

2. Do you already have a ring that fits?

– Measure the inner diameter of the ring using a ruler or caliper
– Match the measurement to the corresponding size on our chart

For accuracy, measure your finger twice – once in the morning and once in the evening – as finger size can vary with temperature and time of day.

 

 measuring-ring-size-string

 

 

Ring Size Chart

Ring size EU

Circumference of the finger (mm)

 Inside diameter of the ring (mm) Ring size UK
 Ring size USA

5

45

14,3

G

3
6 46 14,6 G1/2
 3,5
7 47 14,9 H
 4,5
8

48

15,3

 I1/2
 5
9 49 15,6 J
 5
10 50 15,9 J1/2

5,5
11 51 16,2 L
 6
12 52 16,6 M
 6
13 53 16,9
   6,5
14 54 17,2 N
 7
15 55 17,5 O
 7
16 56 17,8 P
 7,5
17 57 18,1 Q
 8
18 58 18,5 Q1/2
 8,5
19 59 18,8 R1/2
 9
20 60 19,1 S
 9

21

 61 19,4 S1/2
 9,5
22 62 19,7 T1/2
 10
23 63 20,1 U1/2
 10,5
24 64 20,4 V
 11
25 65 20,7 W
 11

 

Extra Tips When Choosing a Ring Size

The style of the ring matters:

For thin bands (like our Meteorite Ring), choose a snug fit.

For wider bands (like the Wave Ring with amber) or Double Rings, you may want to go slightly up in size.

Can’t find your size in our chart? Reach out — if possible, we’ll create a custom size just for you.

 

wide-vs-narrow-band-sizing

 

How to Choose the Right Ring Size as a Gift

Planning a surprise? Here are a few ways to guess someone’s ring size without spoiling it:

Measure a ring they already wear — ideally one worn on the same finger.

Ask someone close — a sister, mum or friend might know the size.

Use the guide below for general size ranges by finger and hand type (sizes are in the Polish system, where size = circumference in mm):

 

Finger Slim Hand Medium Hand Wider Hand
Ring finger 8–11 12–15 15–18
Middle finger 10–13 13–17 17–20
Index finger 11–14 16–20 17–21
Little finger 5–7 6–9 8–10

(These are approximate ranges and may vary depending on hand proportions.)

 

Already know your size? Discover our amber rings and natural stone designs — made with love and local craftsmanship.

 

ring-size-guide

 

And if the size isn’t quite right — no worries. At Kamena, you can always exchange your ring. If you have any doubts, don’t hesitate to contact us.