Already have a ring that fits? Easy.
If you already own a ring that fits the finger you’re shopping for, you’re halfway there. Measure the inside diameter and match it to our size chart below.
No ring? No problem.
Wrap a strip of paper or string around your finger where the ring would sit. Mark where it overlaps, measure the length, and compare it to our sizing chart.
Not glamorous, but effective.
Ring Size Conversion Chart
Because sizing likes to be confusing internationally.
| Inside Circumference | Thailand | US, Canada, Mexico |
UK, Australia, Ireland, New Zealand, South Africa |
France | Germany, Russia, India, China, Japan, South Ukraine, Asia |
Italy, Spain, Netherlands, America, Turkey, Israel |
Switzerland | |
|---|---|---|---|---|---|---|---|---|
| IN | MM | |||||||
| 1.74 | 44.2 | 3 | 3 | F | 44 | 14 | 4 | 4 |
| 1.77 | 44.8 | 3.25 | 3.25 | F 1/2 | 45 | 14 1/4 | --- | 4 5/8 |
| 1.79 | 45.5 | 3.5 | 3.5 | G | 45.5 | 14 1/2 | 5 | 5 1/4 |
| 1.82 | 46.1 | 3.75 | 3.75 | G 1/2 | 46 | 14 3/4 | 6 | 5 7/8 |
| 1.84 | 46.8 | 4 | 4 | H | 47 | 15 | 7 | 6 1/2 |
| 1.87 | 47.4 | 4.25 | 4.25 | H 1/2 | 47.5 | --- | --- | 7 1/8 |
| 1.89 | 48 | 4.5 | 4.5 | I | 48 | 15 1/4 | 8 | 7 3/4 |
| 1.92 | 48.7 | 4.75 | 4.75 | J | 48.5 | 15 1/2 | --- | 8 3/8 |
| 1.94 | 49.3 | 5 | 5 | J 1/2 | 49 | 15 3/4 | 9 | 9 |
| 1.97 | 50 | 5.25 | 5.25 | K | 50 | 16 | --- | 9 5/8 |
| 1.99 | 50.6 | 5.5 | 5.5 | K 1/2 | 50.5 | 16 1/4 | 10 | 10 1/4 |
| 2.02 | 51.2 | 5.75 | 5.75 | L | 51 | --- | 11 | 10 7/8 |
| 2.04 | 51.9 | 6 | 6 | L 1/2 | 52 | 16 1/2 | 12 | 11 1/2 |
| 2.07 | 52.5 | 6.25 | 6.25 | M | 52.5 | 16 3/4 | --- | 12 1/8 |
| 2.09 | 53.1 | 6.5 | 6.5 | M 1/2 | 53 | 17 | 13 | 12 3/4 |
| 2.12 | 53.8 | 6.75 | 6.75 | N | 54 | --- | --- | 13 3/8 |
| 2.14 | 54.4 | 7 | 7 | N 1/2 | 54.5 | 17 1/4 | 14 | 14 |
| 2.17 | 55.1 | 7.25 | 7.25 | O | 55 | 17 1/2 | --- | 14 5/8 |
| 2.19 | 55.7 | 7.5 | 7.5 | O 1/2 | 56 | 17 3/4 | 15 | 15 1/4 |
| 2.22 | 56.3 | 7.75 | 7.75 | P | 56.5 | 18 | --- | 15 7/8 |
| 2.24 | 57 | 8 | 8 | P 1/2 | 57 | --- | 16 | 16 1/2 |
| 2.27 | 57.6 | 8.25 | 8.25 | Q | 58 | 18 1/4 | --- | 17 1/8 |
| 2.29 | 58.3 | 8.5 | 8.5 | Q 1/2 | 58.5 | 18 1/2 | 17 | 17 3/4 |
| 2.32 | 58.9 | 8.75 | 8.75 | R | 59 | 18 3/4 | --- | 18 3/8 |
| 2.34 | 59.5 | 9 | 9 | R 1/2 | 60 | 19 | 18 | 19 |
| 2.37 | 60.2 | 9.25 | 9.25 | S | 60.5 | 19 1/4 | --- | 19 5/8 |
| 2.39 | 60.8 | 9.5 | 9.5 | S 1/2 | 61 | 19 1/2 | 19 | 20 1/4 |
| 2.42 | 61.4 | 9.75 | 9.75 | T | 61.5 | --- | --- | 20 7/8 |
| 2.44 | 62.1 | 10 | 10 | T 1/2 | 62 | 19 3/4 | 20 | 21 1/2 |
| 2.47 | 62.7 | 10.25 | 10.25 | U | 63 | 20 | 21 | 22 1/8 |
| 2.49 | 63.4 | 10.5 | 10.5 | U 1/2 | 63.5 | --- | 22 | 22 3/4 |
| 2.52 | 64 | 10.75 | 10.75 | V | 64 | 20 1/2 | --- | 23 3/8 |
| 2.54 | 64.6 | 11 | 11 | V 1/2 | 65 | 20 3/4 | 23 | 24 |
| 2.57 | 65.3 | 11.25 | 11.25 | W | 65.5 | --- | --- | 24 5/8 |
| 2.59 | 65.9 | 11.5 | 11.5 | W 1/2 | 66 | 21 | 24 | 25 1/4 |
| 2.62 | 66.6 | 11.75 | 11.75 | X | 67 | 21 1/4 | --- | 25 7/8 |
| 2.65 | 67.2 | 12 | 12 | X 1/2 | 67.5 | 21 1/2 | 25 | 26 1/2 |
| 2.68 | 68.1 | 12.25 | 12.25 | Y | 68 | --- | --- | 27 1/8 |
| 2.71 | 68.5 | 12.5 | 12.5 | Z | 69 | 21 3/4 | 26 | 27 3/4 |
| 2.72 | 69.1 | 12.75 | 12.75 | Z 1/2 | 69.5 | --- | --- | 28 3/8 |
| 2.75 | 69.7 | 13 | 13 | --- | 70 | 22 | 27 | 29 |
A few sizing notes
Finger sizes can change throughout the day depending on temperature, hydration, and whether you’ve just aggressively carried groceries.
So if possible, measure at the end of the day when your fingers are at their most normal.
Between sizes?
Usually, size up.
If you’re in between sizes, going slightly larger is usually the safer option, especially for wider bands.
Buying a gift?
Stealth mode activated.
Borrow a ring they already wear, ask a friend, or casually start a suspiciously specific conversation about ring sizes.
Stacking rings?
Fit can feel different.
If you’re stacking multiple rings, you may prefer a slightly roomier fit depending on the style.
Wider bands?
They can fit tighter.
Chunkier bands tend to feel snugger than thinner styles, so sizing up can sometimes make sense.
Still unsure? Honestly, that’s normal.
If you’re between sizes, buying a surprise, or just want a second opinion, we’re always happy to help you figure it out.