Service
RING SIZE GUIDE
Your chosen ring size is as personal as your engagement ring or wedding ring. Your ring should sit comfortably on your finger- not so tight it can’t move, not too loose that it could potentially slip off.
To find your perfect ring size, you can request a free plastic ring sizer from Diamond Heaven. This can be with you within a few working days in the UK and approximately one working week overseas. Click below to request your free ring sizer today.
Get your Free Ring Sizer
Fill in the form below to order a FREE ring sizer to measure your ring size & ensure a Perfect fit.
HOW TO FIND OUT A RING SIZE?
If your engagement is a surprise (and let’s be honest, so many are of course!), it can be hard to get the perfect ring size.
Here are a few ways to find the perfect ring size:
- Borrow your partner’s jewellery If you can borrow a ring of your partners without them noticing, we are able to size this and choose a ring size close to this.
- Get friends and family involved! Maybe your partner’s best friend can help find out their ring size for you. Or when asking the parent’s permission, ask them to try on a family ring to size.
- Ask your partner: The easiest way is to ask your partner what their ring size is, if you don’t mind them knowing what your exact intentions are.
- Trace one of their rings: Ensure you make a trace around the inside and outside of the ring a few times to ensure you have an accurate trace. We can then measure the diameter of the ring and come to the closest ring size.
HAVE US CHECK YOUR RING SIZE
You can visit your local Diamond Heaven and one our consultants will be able to take your ring size. If you’ve also got a ring that you want to know the size of this can be done too. You can book an appointment by clicking the button below.
CAN I HAVE MY RING RESIZED AFTER I PURCHASE?
Most of our rings can be re-sized but we do recommend speaking to us beforehand to ensure the design you’ve selected is suitable.
You can get in touch with us on any of the methods below or speak to your local Diamond Heaven store.
INTERNATIONAL RING SIZES
Other countries use a different scale to the U.K; you can use the table below to help you decide which size you need.
← Swipe left & right to view the full table →
| Circumference (mm) | Diameter (mm) | Europe | UK & Australia | US & Canada | China | Singapore & Japan | Hong Kong | Switzerland |
| 44.2 | 14.1 | 44 | F½ | 3 | 6 | 4 | 6 | 4 |
| 44.8 | 14.3 | 45 | G | 5 | 5¼ | |||
| 45.5 | 14.5 | G½ | 3½ | 7 | 7.5 | |||
| 46.1 | 14.7 | 46 | H | 6 | 6½ | |||
| 46.8 | 14.9 | 47 | H½ | 4 | 8 | 7 | 9 | |
| 47.4 | 15.1 | I | 9 | 7¾ | ||||
| 48.0 | 15.3 | 48 | I½ | 4½< | 8 | 10 | ||
| 48.7 | 15.5 | J | 9 | |||||
| 49.3 | 15.7 | 49 | J½ | 5 | 10 | 9 | 11 | |
| 50.0 | 15.9 | 50 | K | 10 | ||||
| 50.6 | 16.1 | K½ | 5½ | 11 | 10 | 12 | ||
| 51.2 | 16.3 | 51 | L | 11¾ | ||||
| 51.9 | 16.5 | 52 | L½ | 6 | 12 | 11 | 13 | 12¾ |
| 52.5 | 16.7 | M | 13 | 12 | ||||
| 53.1 | 16.9 | 53 | M½ | 6½ | 13 | 14.5 | 14 | |
| 53.8 | 17.1 | N | 14 | |||||
| 54.4 | 17.3 | 54 | N½ | 7 | 14 | 16 | 15¼ | |
| 55.1 | 17.5 | 55 | O | 15 | ||||
| 55.7 | 17.7 | O½ | 7½ | 15 | 17 | 16½ | ||
| 56.3 | 17.9 | 56 | P | 16 | ||||
| 57.0 | 18.1 | 57 | P½ | 8 | 17 | 16 | 17¾ | |
| 57.2 | 18.2 | 18 | ||||||
| 57.6 | 18.3 | Q | ||||||
| 58.3 | 18.5 | 58 | Q½ | 8½ | 18 | 17 | 19 | |
| 58.9 | 18.8 | 59 | R | 19 | ||||
| 59.5 | 19.0 | R½ | 9 | 19 | 18 | 20.5 | ||
| 60.2 | 19.2 | 60 | S | 20 | 20¼ | |||
| 60.8 | 19.4 | 61 | S½ | 9½ | 19 | 22 | ||
| 61.4 | 19.6 | T | 21 | 21½ | ||||
| 62.1 | 19.8 | 62 | T½ | 10 | 20 | 23 | ||
| 62.7 | 20.0 | U | 22 | 21 | ||||
| 63.4 | 20.2 | 63 | U½ | 10½ | 22 | 24 | 22¾ | |
| 64.0 | 20.4 | 64 | V | 23 | ||||
| 64.6 | 20.6 | V½ | 11 | 23 | 25 | |||
| 65.3 | 20.8 | 65 | W | 24 | 25 | |||
| 65.9 | 21.0 | 66 | W½ | 11½ | 25 | 24 | 26 | |
| 66.6 | 21.2 | X | ||||||
| 67.2 | 21.4 | 67 | X½ | 12 | 26 | 25 | 27.75 | 27½ |
| 67.8 | 21.6 | Y | ||||||
| 68.5 | 21.8 | 68 | Z | 12½ | 26 | 28¾ | ||
| 69.1 | 22.0 | 69 | Z | |||||
| 69.7 | 22.2 | 70 | 13 | 27 | 30 | |||
| 70.4 | 22.4 | Z+1 | ||||||
| 71.0 | 22.6 | Z+2 | 13½ |
