Ring Size Guide | Find Your Perfect Fit | Caeli
A ring you never want to take off starts with a fit you never have to think about. Use either method below to find your size in under five minutes, no tools required.
Method 1: Measure a Ring You Already Own
- Choose a ring that fits the finger you plan to wear your new ring on.
- Place it on a ruler and measure the inside diameter in millimeters, from inner edge to inner edge.
- Match that measurement to the chart below.
Method 2: Measure Your Finger
- Wrap a thin strip of paper or a piece of string snugly around the base of your finger.
- Mark the point where the end overlaps.
- Measure the length in millimeters. That is your finger circumference; find it in the chart below.
US Ring Size Chart
| US Size | Inside Diameter (mm) | Finger Circumference (mm) |
|---|---|---|
| 4 | 14.9 | 46.8 |
| 4.5 | 15.3 | 48.0 |
| 5 | 15.7 | 49.3 |
| 5.5 | 16.1 | 50.6 |
| 6 | 16.5 | 51.9 |
| 6.5 | 16.9 | 53.1 |
| 7 | 17.3 | 54.4 |
| 7.5 | 17.7 | 55.7 |
| 8 | 18.1 | 57.0 |
| 8.5 | 18.5 | 58.3 |
| 9 | 19.0 | 59.5 |
| 9.5 | 19.4 | 60.8 |
| 10 | 19.8 | 62.1 |
| 10.5 | 20.2 | 63.4 |
| 11 | 20.6 | 64.6 |
Fit Tips
- Measure at the end of the day. Fingers are slightly larger in the evening and in warm weather; a ring sized in the morning can feel tight by night.
- Account for your knuckle. If your knuckle is noticeably larger than the base of your finger, measure both and choose a size in between.
- Between sizes? Size up. A slightly loose ring is comfortable; a slightly tight one is not.
- Wide bands fit tighter. If a ring has a wider band, consider going up a half size.
- Measure two or three times. String and paper can stretch or slip; repeat the measurement to confirm you get the same number.
Still not sure? Write to us through the contact page and we will help you find the right fit before you order. Every Caeli ring is crafted in 14K gold over 316L surgical steel, hypoallergenic and water-resistant, and made to be worn every day.