Discovering Your Perfect Fit
Finding your ring size is effortless. For the most accurate result, simply measure the inner diameter of a ring you already wear on the same hand and finger. Then, match that measurement with the corresponding size in our Ring Size Chart below.
How to Measure Your Ring Size
Method 1: With a String or Paper
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Wrap a thin strip of paper or string around the base of your finger (where the ring will sit).
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Mark where the ends meet.
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Lay the string or paper flat and measure the length in millimetres (mm). That gives you the circumference of your finger.
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Use the chart below to find your size.
Method 2: Using an Existing Ring
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Take a ring that fits the finger you’ll wear the new one on.
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Measure the inside diameter (mm) of that ring with a ruler or caliper.
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Use the conversion chart below to find the matching size.
Ring Size Conversion Chart
| Circumference (mm) | Diameter (mm) | EU Size | UK Size | US Size |
|---|---|---|---|---|
| 37.8 | 12.04 | 38 | A | 0.5 |
| 39.1 | 12.45 | 39 | B | 1 |
| 40.4 | 12.85 | 40 | C | 1.5 |
| 41.7 | 13.26 | 42 | D | 2 |
| 43.0 | 13.67 | 43 | E | 2.5 |
| 44.3 | 14.07 | 44 | F | 3 |
| 45.6 | 14.48 | 45 | G | 3.5 |
| 46.8 | 14.88 | 46 | H | 4 |
| 48.7 | 15.49 | 49 | I | 5 |
| 50.0 | 15.90 | 50 | K | 5.5 |
| 51.2 | 16.31 | 51 | L | 6 |
| 52.5 | 16.71 | 52 | M | 6.5 |
| 54.3 | 17.30 | 54 | N | 7 |
| 55.5 | 17.68 | 55 | O | 7.5 |
| 57.0 | 18.10 | 57 | P | 8 |
| 59.5 | 18.90 | 60 | R | 9 |
| 62.1 | 19.80 | 62 | T | 10 |
| 64.6 | 20.60 | 64 | V | 11 |
| 67.2 | 21.40 | 67 | Y | 12 |
Tips for a Better Fit
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Measure your finger at different times of the day. Fingers swell when warm.
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If your ring band is very wide, consider sizing up slightly for comfort.
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If you’re between sizes, it’s usually safer to go up — resizing a slightly loose ring is often easier than one that’s too tight.
