Ring Size Guide — Find Your Size | Unjellic
Ring Size Guide
Not sure which ring size to order? Use this guide to find your correct ring size at home in 3 minutes.
Method 1: Measure a Ring You Already Own
Take a ring that fits the finger you want to wear your new ring on. Measure the internal diameter of that ring in millimetres using a ruler.
| Ring Size (IN/US) | Internal Diameter (mm) | Circumference (mm) |
|---|---|---|
| 4 | 14.8 mm | 46.5 mm |
| 5 | 15.7 mm | 49.3 mm |
| 6 | 16.5 mm | 51.8 mm |
| 7 | 17.3 mm | 54.4 mm |
| 8 | 18.2 mm | 57.2 mm |
| 9 | 19.0 mm | 59.7 mm |
| 10 | 19.8 mm | 62.2 mm |
Method 2: Measure Your Finger
- Cut a thin strip of paper (about 6mm wide).
- Wrap it around the base of the finger you want to wear the ring on.
- Mark where the paper overlaps.
- Measure the length of the strip in millimetres — this is your finger circumference.
- Match it to the table above to find your size.
Tips: Measure at the end of the day (fingers swell slightly in heat). If you are between sizes, go up one size.
Our Adjustable Option
Most Unjellic rings are available in an Adjustable option that opens and closes to fit finger sizes approximately 5–9. This is the safest option if you’re unsure of your size or buying as a gift.
Still Not Sure?
Email us at sales@unjellic.com and we’ll help you find the right size before you order.

