Ring Sizes
📏 Not sure what your ring size is?
Sizing can feel confusing different jewellers use different systems, and no two charts are exactly alike. That’s why I size everything in millimetres (mm) for accuracy. Here are two easy ways to measure at home:
Option 1: Paper strip method
- Cut a strip of paper about 10cm long, 1cm wide.
- Wrap it around your finger where the ring will sit.
- Mark where the ends meet (not too tight, not too loose).
- Lay it flat and measure the length in mm this is your finger’s circumference.
- Match it to the chart below.
Option 2: Use a ring you already own
- Grab a ring that fits the finger you want sized.
- Place it flat on a ruler.
- Measure straight across the inside (the inner diameter in mm).
- Match it to the chart below.
Larl Wonders Sizing Chart
Note: All sizes are measured using my own calipers, mandrel, and ring sizer. This chart is unique to Larl Wonders Jewellery to keep sizing as accurate and consistent as possible.
| UK Size | Inside Diameter (mm) |
|---|---|
| J | 15.5 |
| J½ | 15.8 |
| K | 16.0 |
| K½ | 16.2 |
| L | 16.4 |
| L½ | 16.6 |
| M | 16.8 |
| M½ | 17.0 |
| N | 17.2 |
| N½ | 17.4 |
| O | 17.6 |
| O½ | 17.8 |
| P | 18.0 |
| P½ | 18.2 |
| Q | 18.4 |
| Q½ | 18.7 |
| R | 18.9 |
| R½ | 19.1 |
| S | 19.3 |
| S½ | 19.4 |
| T | 19.6 |
| T½ | 19.8 |
| U | 20.0 |
Important to know
- Weather & time: Fingers swell in heat and shrink in cold. They’re usually bigger in the evening.
- Dominant hand: Your writing hand is often slightly larger.
- Band width: Wide bands (7mm+) feel tighter — size up about half a size for comfort.
- Normal variation: Don’t worry if you get slightly different results each time — it happens.
- 💡 When in doubt, size up for a more comfortable fit.
