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Ring Size Guide
Find the Perfect Fit for You or a Loved One
Ring Sizer Tool
Use a physical or printable ring sizer to get the most accurate measurement.
String or Paper Method
Wrap, mark, and measure a string or paper strip around your finger’s base.
Use a Ring You Own
Measure the diameter of a well-fitting ring and compare with the chart.
Ring Size Conversion Chart (UK)
Compare your measurement to find the right size
| UK Size | Diameter (mm) | Circumference (mm) |
|---|---|---|
| F | 14.0 | 44.2 |
| F½ | 14.2 | 44.8 |
| G | 14.4 | 45.5 |
| G½ | 14.6 | 46.1 |
| H | 14.8 | 46.8 |
| H½ | 15.0 | 47.4 |
| I | 15.2 | 48.0 |
| I½ | 15.3 | 48.5 |
| J | 15.5 | 49.3 |
| J½ | 15.7 | 50.0 |
| K | 15.9 | 50.6 |
| K½ | 16.1 | 51.2 |
| L | 16.3 | 51.9 |
| L½ | 16.5 | 52.5 |
| M | 16.7 | 53.1 |
| M½ | 16.9 | 53.8 |
| N | 17.1 | 54.4 |
| N½ | 17.3 | 55.1 |
| O | 17.5 | 55.7 |
| O½ | 17.7 | 56.3 |
| P | 17.9 | 57.0 |
| P½ | 18.1 | 57.6 |
| Q | 18.3 | 58.3 |
| Q½ | 18.5 | 58.9 |
| R | 18.7 | 59.5 |
| R½ | 18.9 | 60.2 |
| S | 19.1 | 60.8 |
| S½ | 19.3 | 61.4 |
| T | 19.5 | 62.1 |
| T½ | 19.7 | 62.7 |
| U | 19.9 | 63.4 |
| U½ | 20.1 | 64.0 |
| V | 20.3 | 64.6 |
| V½ | 20.5 | 65.3 |
| W | 20.7 | 65.9 |
| W½ | 20.9 | 66.6 |
| X | 21.1 | 67.2 |
| X½ | 21.3 | 67.8 |
| Y | 21.5 | 68.5 |
| Z | 21.7 | 69.1 |
Consider the Knuckle
Size slightly up if your knuckle is larger than your finger’s base.
Measure at Room Temperature
Heat and cold can change finger size. Measure at average conditions.
Band Width Matters
Wider bands feel tighter – consider going half a size up.
Resizing
Rings can usually be resized, but a good fit saves time and cost.
Still Unsure?
Visit Lenora Diamonds or your local jeweler for a free sizing consultation.
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