How to Measure Ring Size
Do you need to find a ring size for your partner, or maybe even yourself? Use our ring size conversion table below.
When ordering a ring from us, you will be able to select your ring size when selecting the size of the diamond and the precious metal. If you don't know your ring size, you can choose the option "I don't know" and we will send you the most common size L/M. You will then be able to have the ring resized at no extra cost.
How to get the right ring size online?
Finding the right ring size online can be a difficult task. It can even stop you from wanting to buy your engagement ring online. Below are some suggestions that you can try in order to find the right engagement ring size.
Using another ring that they already own or wear
This isn't always 100% accurate. Causal rings will not always be worn in the same way as an engagement ring. If you feel confident in using another ring, measure the diameter on the inside of the ring and then match the measurements to the size chart below.
Ask a family member or friend
You might want to be careful here, you could give the game away. however, If a friend or family member can think of a creative way to find out e.g. try on the potential fiance's ring (if they own one) for size themselves, or just happen to know the size. Then they may be able to report back to you so that you can find the perfect ring for your loved one.
Ring Size Chart
U.S/Canada Size |
Diameter in Inches |
Diameter in MM |
Metric MM Equivalent |
British | French | German | Japanese | Swiss |
---|---|---|---|---|---|---|---|---|
2 3/4 | - | 13.83 | 43.4 | E 1/2 | - | - | ||
3 | 0.553 | 14.05 | 44 | F | 44 | 14 | 4 | 4 |
3 1/8 | - | 14.15 | 44.3 | F 1/2 | - | - | ||
3 1/4 | - | 14.25 | 44.6 | - | - | - | ||
3 3/8 | - | 14.36 | 44.9 | G | 45 1/4 | - | 5 | 5 1/4 |
3 1/2 | 0.569 | 14.45 | 45.2 | - | - | 14 1/2 | ||
3 5/8 | - | 14.56 | 45.6 | G 1/2 | - | 6 | ||
3 3/4 | - | 14.65 | 45.9 | H | 46 1/2 | 6 1/2 | ||
4 | 0.585 | 14.86 | 46.5 | H 1/2 | - | 15 | 7 | |
4 1/4 | - | 15.04 | 47.1 | I | 47 3/4 | 7 3/4 | ||
4 1/2 | 0.601 | 15.27 | 47.8 | I 1/2 | - | 15 1/4 | 8 | |
4 5/8 | - | 15.4 | 48.1 | J | 49 | 15 1/2 | 9 | |
4 3/4 | - | 15.53 | 48.4 | - | - | |||
5 | 0.618 | 15.7 | 49 | J 1/2 | - | 15 3/4 | 9 | |
5 1/8 | - | 15.8 | 49.3 | K | 50 | 10 | ||
5 1/4 | - | 15.9 | 49.6 | - | - | |||
5 3/8 | - | 16 | 50 | K 1/2 | - | 10 | ||
5 1/2 | 0.634 | 16.1 | 50.3 | L | 51 3/4 | 16 | 11 3/4 | |
5 3/4 | - | 16.3 | 50.9 | - | - | |||
5 7/8 | - | 16.41 | 51.3 | L 1/2 | - | |||
6 | 0.65 | 16.51 | 51.5 | M | 52 3/4 | 16 1/2 | 12 | 12 3/4 |
6 1/4 | - | 16.71 | 52.2 | M 1/2 | - | |||
6 1/2 | 0.666 | 16.92 | 52.8 | N | 54 | 17 | 13 | 14 |
6 3/4 | - | 17.13 | 53.4 | N 1/2 | - | |||
7 | 0.683 | 17.35 | 54 | O | 55 1/4 | 17 1/4 | 14 | 15 1/4 |
7 1/4 | - | 17.45 | 54.7 | O 1/2 | - | |||
7 1/2 | 0.699 | 17.75 | 55.3 | P | 56 1/2 | 17 3/4 | 15 | 16 1/2 |
7 3/4 | - | 17.97 | 55.9 | P 1/2 | - | |||
8 | 0.716 | 18.19 | 56.6 | Q | 57 3/4 | 18 | 16 | 17 3/4 |
8 1/4 | - | 18.35 | 57.2 | Q 1/2 | - | |||
8 1/2 | 0.732 | 18.53 | 57.8 | - | - | 18 1/2 | 17 | |
8 5/8 | - | 18.61 | 58.4 | R | 59 | 19 | ||
8 3/4 | - | 18.69 | 58.4 | - | - | |||
8 7/8 | - | 18.8 | 59 | R 1/2 | - | |||
9 | 0.748 | 18.89 | 59.1 | - | - | 19 | 18 | |
9 1/8 | - | 19.1 | 59.4 | S | 60 1/4 | 20 1/4 | ||
9 1/4 | - | 19.22 | 59.7 | - | - | |||
9 3/8 | - | 19.31 | 60 | S 1/2 | - | |||
9 1/2 | 0.764 | 19.41 | 60.3 | - | - | 19 1/2 | 19 | |
9 5/8 | - | 19.51 | 60.6 | T | 61 1/2 | 21 1/2 | ||
9 3/4 | - | 19.62 | 60.9 | - | - | |||
10 | 0.781 | 19.84 | 61.6 | T 1/2 | - | 20 | 20 | |
10 1/4 | - | 20.02 | 62.2 | U | 62 3/4 | 21 | 22 3/4 | |
10 1/2 | 0.797 | 20.2 | 62.8 | U 1/2 | - | 20 1/4 | 22 | |
10 5/8 | - | 20.32 | 63.1 | V | 63 | 23 3/4 | ||
10 3/4 | - | 20.44 | 63.5 | - | - | |||
11 | 0.814 | 20.68 | 64.1 | V 1/2 | - | 20 3/4 | 23 | |
11 1/8 | - | 20.76 | 64.3 | W | 65 | 25 | ||
11 1/4 | - | 20.85 | 64.7 | - | - | |||
11 3/8 | - | 20.94 | 65 | W 1/2 | - | |||
11 1/2 | - | 21.08 | 65.3 | - | - | 21 | 24 | |
11 5/8 | 0.83 | 21.18 | 65.7 | X | 66 1/4 | 26 1/4 | ||
11 3/4 | - | 21.24 | 66 | - | - | |||
11 7/8 | - | 21.3 | 66.3 | X 1/2 | - | |||
12 | 0.846 | 21.49 | 66.6 | Y | 67 1/2 | 21 1/4 | 25 | 27 1/2 |
12 1/4 | - | 21.69 | 67.2 | Y 1/2 | - | |||
12 1/2 | 0.862 | 21.89 | 67.9 | Z | 68 3/4 | 21 3/4 | 26 | 28 3/4 |
12 3/4 | - | 22.1 | 68.5 | Z 1/2 | - |
Re-sizing Policy
You will be able to select your specified finger size in the Checkout. If the finger size is unknown, please select ‘stock size’ and have the ring re-sized after the proposal, free of charge’. If you have already specified a ring size with your initial order and this turns out to be incorrect, we can re-size the ring at a small cost.