Ring Size Guide
Finding your perfect ring size should feel just as effortless as wearing your favorite Celestia piece ✨ Whether you're measuring a ring you already own or sizing your finger directly, this guide will help you find the perfect fit with ease.
Measuring the Inner Diameter of a Ring
Choose a ring that already fits the desired finger comfortably. Using a ruler or measuring tape, measure the inner diameter of the ring in millimeters (mm) from one inside edge straight across to the other.
| US Size | Inner Diameter (mm) |
|---|---|
| 5 | 15.7 mm |
| 6 | 16.5 mm |
| 7 | 17.3 mm |
| 8 | 18.1 mm |
| 9 | 18.9 mm |
Measuring Your Finger Circumference
Wrap a thin strip of paper, string, or measuring tape around the base of your finger. Make sure it feels snug but comfortable. Mark where the ends meet, then measure the length in millimeters. Compare your measurement to the chart below.
| US Size | Finger Circumference (mm) |
|---|---|
| 5 | 49.3 mm |
| 6 | 51.9 mm |
| 7 | 54.4 mm |
| 8 | 57.0 mm |
| 9 | 59.5 mm |
Follow this tutorial: Measure your finger's circumference
Tips for the Most Accurate Fit
• Measure your finger at the end of the day when fingers are naturally slightly larger.
• Avoid measuring when your hands are cold, as fingers tend to shrink.
• If you are between sizes, we recommend sizing up for a more comfortable fit.
• Measure 2–3 times to ensure accuracy.
• Wider bands may fit more snugly, so consider sizing up slightly for thicker rings.