Ring Size Chart
Rebecca McDermott Jewellery
Ring Size Chart – UK to US Conversion Guide
Finding your perfect ring size is essential when buying jewellery online. Use our comprehensive ring size chart below to convert between UK and US ring sizes, so you can shop with confidence at Rebecca McDermott Jewellery.
| UK Ring Size | US Ring Size |
|---|---|
| A | ½ |
| A½ | ¾ |
| B | 1 |
| B½ | 1¼ |
| C | 1½ |
| C½ | 1¾ |
| D | 2 |
| D½ | 2¼ |
| E | 2½ |
| E½ | 2¾ |
| F | 3 |
| F½ | 3¼ |
| G | 3½ |
| G½ | 3¾ |
| H | 4 |
| H½ | 4¼ |
| I | 4½ |
| I½ | 4¾ |
| J | 5 |
| J½ | 5¼ |
| K | 5½ |
| K½ | 5¾ |
| L | 6 |
| L½ | 6¼ |
| M | 6½ |
| M½ | 6¾ |
| N | 7 |
| N½ | 7¼ |
| O | 7½ |
| O½ | 7¾ |
| P | 8 |
| P½ | 8¼ |
| Q | 8½ |
| Q½ | 8¾ |
| R | 9 |
| R½ | 9¼ |
| S | 9½ |
| S½ | 9¾ |
| T | 10 |
| T½ | 10¼ |
| U | 10½ |
| U½ | 10¾ |
| V | 11 |
| V½ | 11¼ |
| W | 11½ |
| W½ | 11¾ |
| X | 12 |
| X½ | 12¼ |
| Y | 12½ |
| Y½ | 12¾ |
| Z | 13 |
| Z+1 | 13¼ |
| Z+2 | 13½ |
| Z+3 | 13¾ |
| Z+4 | 14 |
| Z+5 | 14¼ |
| Z+6 | 14½ |
How to Measure Your Ring Size at Home
Not sure of your ring size? Here are a few simple ways to measure at home:
- Use an existing ring: Place a ring that fits well on a ruler and measure the internal diameter in millimetres.
- Use string or paper: Wrap a thin strip of paper or string around the base of your finger, mark where it overlaps, and measure the length in millimetres. This is your circumference — divide by 3.14 to get your diameter.
- Visit us in person: We're always happy to size you in person if you're local to us.
- Order a ring sizer from our website
Tips for Getting the Right Fit
- Fingers can swell in heat and shrink in cold — measure at the end of the day when fingers are at their largest.
- If you're between sizes, we recommend sizing up for comfort.
- Wide band rings may feel tighter — consider going half a size up.
If you have any questions about sizing or need help choosing the right size for a gift, please don't hesitate to get in touch — we're happy to help!