Understanding ring sizes internationally - comparison and conversion
How do I find the right ring size worldwide?
Anyone who orders a ring online or wants to give a ring as an international gift is often faced with the question: Which ring size corresponds to the German size in the USA, Great Britain or France?
In this guide, we show you how to compare and convert international ring sizes - and what you should look out for.
What does ring size mean?
The Ring size indicates how large the inner diameter or inner circumference of a ring is - and therefore how well the ring fits on the finger. The units of measurement and designations differ depending on the country:
- Germany, Austria & Switzerland: The inner circumference is usually given in millimetres (e.g. ring size 50 = 50 mm circumference).
- Great Britain: Letter codes are used (e.g. size M).
- USA & Canada: The sizes are indicated with numerical values (e.g. size 6).
- France: Here, too, the system is based on metric measurement, albeit with different gradations in circumference.
- China: Uses numerical values that are also based on the inner circumference (e.g. size 10, 11, 12 ...).
- Italy: Works with its own numerical system, which differs slightly from other European data.
- Australia: Like Great Britain, it is based on letter codes, but with different assignments in some cases.
- Switzerland: Uses its own numbering, which is similar to the inner circumference, but works with its own values (e.g. size 10, 12, 14 ...).
If you are unsure which size is right for you, use our tips on ring sizing.
Ring size chart
To make sure you are on the safe side when designing your personalised ring, you will find a clear international ring size chart here. It will help you to determine your exact ring size and compare it with international sizes.
You can see the ring sizes in the following table:
Germany, England, France, USA/Canada, China, Italy, Australia and Switzerland - each in relation to the inner diameter in millimetres.
| INTERNATIONAL RING SIZE TABLE | ||||||||
|---|---|---|---|---|---|---|---|---|
| Inner diameter (in mm) |
Germany | England | France | USA/Canada | China | Italy | Australia | Switzerland |
| 12,7 | 40 | C | 0,0 | 1,4 (1) | 1 | 41 | D | 0 |
| 13,0 | 41 | C 1/2 | 1,0 | 1,8 (1-) | 2 | 42 | D½ | 1 |
| 13,4 | 42 | D 1/2 | 2,0 | 2,2 (2) | 3 | 43 | E | 2 |
| 13,7 | 43 | E 1/2 | 3,0 | 2,6 (2-) | 4 | 44 | E½ | 3 |
| 14,0 | 44 | F | 4,0 | 3,0 (2-) | 5 | 45 | F | 4 |
| 14,3 | 45 | G | 5,0 | 3,4 (3) | 6 | 46 | G | 5 |
| 14,6 | 46 | G 1/2 | 6,0 | 3,7 (3-) | 7 | 47 | G½ | 6 |
| 15,0 | 47 | H 1/2 | 7,0 | 4,1 (4) | 8 | 48 | H | 7 |
| 15,3 | 48 | I 1/2 | 8,0 | 4,5 (4-) | 9 | 49 | I | 8 |
| 15,6 | 49 | J | 9,0 | 4,9 (4) | 10 | 50 | J | 9 |
| 15,9 | 50 | K | 10,0 | 5,3 (5) | 11 | 51 | K | 10 |
| 16,2 | 51 | K 1/2 | 11,0 | 5,7 (5-) | 12 | 52 | K½ | 11 |
| 16,6 | 52 | L 1/2 | 12,0 | 6,1 (6) | 13 | 53 | L | 12 |
| 16,9 | 53 | M 1/2 | 13,0 | 6,4 (6) | 14 | 54 | M | 13 |
| 17,2 | 54 | N | 14,0 | 6,8 (6-) | 15 | 55 | N | 14 |
| 17,5 | 55 | O | 15,0 | 7,2 (7) | 16 | 56 | O | 15 |
| 17,8 | 56 | P | 16,0 | 7,6 (7-) | 17 | 57 | P | 16 |
| 18,1 | 57 | P 1/2 | 17,0 | 8,0 (8) | 18 | 58 | P½ | 17 |
| 18,5 | 58 | Q 1/2 | 18,0 | 8,4 (8) | 19 | 59 | Q | 18 |
| 18,8 | 59 | R | 19,0 | 8,7 (8-) | 20 | 60 | R | 19 |
| 19,1 | 60 | S | 20,0 | 9,1 (9) | 21 | 61 | S | 20 |
| 19,4 | 61 | T | 21,0 | 9,5 (9-) | 22 | 62 | T | 21 |
| 19,7 | 62 | T 1/2 | 22,0 | 9,9 (9-) | 23 | 63 | T½ | 22 |
| 20,1 | 63 | U 1/2 | 23,0 | 10,3 (10) | 24 | 64 | U | 23 |
| 20,4 | 64 | V | 24,0 | 10,7 (10-) | 25 | 65 | V | 24 |
| 20,7 | 65 | W | 25,0 | 11,0 (11) | 26 | 66 | W | 25 |
| 21,0 | 66 | X | 26,0 | 11,4 (11) | 27 | 67 | X | 26 |
| 21,3 | 67 | X 1/2 | 27,0 | 11,8 (11-) | 28 | 68 | X½ | 27 |
| 21,6 | 68 | Y 1/2 | 28,0 | 12,1 (12) | 29 | 69 | Y | 28 |
| 22,0 | 69 | Z 1/2 | 29,0 | 12,6 (12-) | 30 | 70 | Z | 29 |
| 22,3 | 70 | Z +1 | 30,0 | 13,0 (12-) | 31 | 71 | Z+ | 30 |
How to find your ring size
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With a ring measuring tape: Measure directly on your finger - ideally in the evening at room temperature.
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With an existing ring: Read off the inside diameter with a ruler or calliper gauge.
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On site in our ring forge: We measure your ring size and advise you on your new ring that you have forged yourself.
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With a ring sizer: request it below - we will send it to you free of charge by post.
Our tip: If you want to be on the safe side, determine your ring size with our free ring sizer - or even better:
Come to our ring forge and make your own ring.
Not only will your ring fit perfectly, it will also be an unforgettable experience.
Request ring sizer
Request our ring sizer now and find out your ring size conveniently and precisely. Simply enter your address and we will send it to you free of charge by post.
Ring sizer requested
Rings created in our workshop
