Ring Size Guide
How to Measure Your Ring Size at Home
Finding your perfect ring size is simple with a few quick steps:
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Download our free printable ring sizer. Print the guide at 100% scale for accurate measurement.
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Cut out the ring sizer strip and wrap it comfortably around the base of your finger.
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Note where the strip overlaps to find your measurement in millimetres.
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Compare your result with our ring size chart in letters and numbers below to find your ideal size.
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If you already have a ring that fits well, measure its inside diameter and use our international conversion chart to check your UK, US, or EU size.
Tip: Measure your finger at the end of the day when it’s warm — fingers can vary slightly in size throughout the day.
International Ring Size Conversion Chart
|
Diameter |
Circumference | Sizes | |||||||
| (Inch) |
(mm) |
(Inch) | (mm) | UK, Ireland & Australia | USA & Canada | Japan |
Switzerland/ Italy/ Spain |
France/ Germany | Alternative GER |
| 0.568 | 14.469 | 1.810 | 46 | G | 3.5 | 6 | 5.5 | 46 | 14.5 |
| 0.586 | 14.884 | 1.850 | 47 | H | 4 | 7 | 6.5 | 47 | 15 |
| 0.602 | 15.291 | 1.890 | 48 | I | 4.5 | 8 | 7.75 | 48 | 15.5 |
| 0.619 | 15.723 | 1.929 | 49 | J | 5 | 9 | 9 | 49 | 15.75 |
| 0.635 | 16.129 | 1.969 | 50 | K | 5.5 | 10 | 10.25 | 50 | 16.25 |
| 0.652 | 16.561 | 2.047 | 52 | L | 6 | 11 | 11.5 | 52 | 16.5 |
| 0.668 | 16.967 | 2.087 | 53 | M | 6.5 | 13 | 12.75 | 53 | 17 |
| 0.685 | 17.399 | 2.126 | 54 | N | 7 | 14 | 14 | 54 | 17.25 |
| 0.701 | 17.805 | 2.165 | 55 | O | 7.5 | 15 | 15.25 | 55 | 17.75 |
| 0.717 | 18.212 | 2.244 | 57 | P | 8 | 16 | 16.5 | 57 | 18 |
| 0.734 | 18.644 | 2.283 | 58 | Q | 8.5 | 17 | 17.75 | 58 | 18.5 |
| 0.750 | 19.050 | 2.362 | 59 | R | 9 | 18 | 19 | 59 | 19 |
| 0.767 | 19.482 | 2.482 | 60 | S | 9.5 | 19 | 20.25 | 60 | 19.5 |
| 0.783 | 19.888 | 2.441 | 62 | T | 10 | 20 | 21.5 | 62 | 20 |
| 0.800 | 20.320 | 2.480 | 63 | U | 10.5 | 22 | 22.75 | 63 | 20.5 |
| 0.816 | 20.726 | 2.520 | 64 | V | 11 | 23 | 24 | 64 | 20.75 |
| 0.833 | 21.158 | 2.559 | 65 | W | 11.5 | 24 | 25.25 | 65 | 21 |
| 0.849 | 21.565 | 2.638 | 67 | X | 12 | 25 | 26.5 | 67 | 21.25 |
| 0.866 | 21.996 | 2.677 | 68 | Y | 12.5 | 26 | 27.75 | 68 | 21.75 |
| 0.882 | 22.403 | 2.717 | 69 | Z | 13 | 27 | 29 | 69 | 22 |