Ring Size Guide
Ring Size Guide (UK Sizing)
Finding the perfect ring size ensures a comfortable and secure fit. Use this guide to determine your UK ring size at home.
How to Measure Your Ring Size
There are two simple methods to find your ring size: measuring an existing ring or using a string/paper strip to measure your finger.
Method 1: Measure an Existing Ring
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Choose a ring that fits comfortably on the intended finger.
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Measure the inside diameter of the ring (the width across the center in millimeters).
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Use the chart below to match the diameter to a UK ring size.
Method 2: Measure Your Finger
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Cut a thin strip of paper or use a piece of string.
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Wrap it snugly around the base of your finger (not too tight or too loose).
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Mark where the ends meet and measure the length in millimeters.
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Use the chart below to find your ring size based on the circumference.
UK Ring Size Chart
| UK Size | US Size | EU (ISO) Size | Inside Diameter (mm) | Finger Circumference (mm) |
|---|---|---|---|---|
| F | 3 | 44 | 14.0 | 44.2 |
| G | 3.5 | 45 | 14.4 | 45.5 |
| H | 4 | 46 | 14.8 | 46.8 |
| I | 4.5 | 47 | 15.2 | 48.0 |
| J | 5 | 49 | 15.6 | 49.3 |
| K | 5.5 | 50 | 16.0 | 50.6 |
| L | 6 | 51 | 16.4 | 51.9 |
| M | 6.5 | 52 | 16.8 | 53.1 |
| N | 7 | 54 | 17.2 | 54.4 |
| O | 7.5 | 55 | 17.6 | 55.7 |
| P | 8 | 57 | 18.0 | 57.0 |
| Q | 8.5 | 58 | 18.4 | 58.3 |
| R | 9 | 59 | 18.8 | 59.5 |
| S | 9.5 | 60 | 19.2 | 60.8 |
| T | 10 | 62 | 19.6 | 62.1 |
| U | 10.5 | 63 | 20.0 | 63.4 |
| V | 11 | 64 | 20.4 | 64.6 |
| W | 11.5 | 66 | 20.8 | 65.9 |
| X | 12 | 67 | 21.2 | 67.2 |
| Y | 12.5 | 68 | 21.6 | 68.5 |
| Z | 13 | 69 | 22.0 | 69.7 |
Tips for Accurate Sizing
✅ Measure at the Right Time: Your fingers can swell in heat and shrink in cold. Measure at the end of the day when your hands are at their normal size.
✅ Ensure a Comfortable Fit: The ring should slide over your knuckle with slight resistance but not be too loose or too tight.
✅ If Between Sizes: Choose the larger size for a more comfortable fit.
✅ For the Most Accurate Results: Consider visiting a jeweller for professional sizing or using a reusable ring sizer.