Size Guide
Not sure of your ring size? You're not alone — it's the most common question we get. Our rings come in sizes 3.5 to 9.5, in quarter sizes, so we can almost always land on a fit that feels right.
How to measure at home
Option 1 — measure a ring that already fits. Lay it flat and measure the inside diameter (straight across the center of the opening) in millimeters. Match it to the chart below.
Option 2 — measure your finger. Wrap a thin strip of paper or string around the finger, mark where it overlaps, and measure that length in millimeters. That's the inside circumference in the chart below.
A few tips: measure at the end of the day (fingers run slightly larger), measure a few times and average, and if your knuckle is much wider than the base of your finger, size for the knuckle — the ring has to get over it. Between sizes? Go a quarter size up.
Ring size chart
| US size | Inside diameter | Inside circumference |
|---|---|---|
| 3.5 | 14.4 mm | 45.2 mm |
| 3.75 | 14.6 mm | 45.9 mm |
| 4 | 14.9 mm | 46.8 mm |
| 4.25 | 15.1 mm | 47.4 mm |
| 4.5 | 15.3 mm | 48.1 mm |
| 4.75 | 15.5 mm | 48.7 mm |
| 5 | 15.7 mm | 49.3 mm |
| 5.25 | 15.9 mm | 50.0 mm |
| 5.5 | 16.1 mm | 50.6 mm |
| 5.75 | 16.3 mm | 51.2 mm |
| 6 | 16.5 mm | 51.8 mm |
| 6.25 | 16.7 mm | 52.5 mm |
| 6.5 | 16.9 mm | 53.1 mm |
| 6.75 | 17.1 mm | 53.7 mm |
| 7 | 17.3 mm | 54.3 mm |
| 7.25 | 17.5 mm | 55.0 mm |
| 7.5 | 17.7 mm | 55.6 mm |
| 7.75 | 17.9 mm | 56.2 mm |
| 8 | 18.1 mm | 56.9 mm |
| 8.25 | 18.3 mm | 57.5 mm |
| 8.5 | 18.5 mm | 58.1 mm |
| 8.75 | 18.7 mm | 58.7 mm |
| 9 | 18.9 mm | 59.4 mm |
| 9.25 | 19.1 mm | 60.0 mm |
| 9.5 | 19.4 mm | 60.9 mm |
Measurements are approximate and can vary slightly by ring width — wider bands usually fit a touch snugger.
Still not sure?
Book an appointment and we'll size you in person, or call or text us at (385) 515-9789 — we're happy to help you figure it out before you order.