Size Guide
Ring Size Guide
Use this guide to compare US ring sizes, inside diameter, and finger circumference before choosing a TheFuMaster ring.
How to Measure a Ring
- Choose a ring that already fits the intended finger comfortably.
- Measure the inside diameter across the center of the ring.
- Compare the measurement with the chart below.
Measure in millimeters for the most accurate result. Fingers can change slightly with temperature and time of day.
US Ring Size Chart
| US Size | Inside Diameter | Finger Circumference |
|---|---|---|
| 5 | 15.7 mm | 49.3 mm |
| 6 | 16.5 mm | 51.9 mm |
| 7 | 17.3 mm | 54.4 mm |
| 8 | 18.1 mm | 57.0 mm |
| 9 | 18.9 mm | 59.5 mm |
| 10 | 19.8 mm | 62.1 mm |
| 11 | 20.6 mm | 64.6 mm |
| 12 | 21.4 mm | 67.2 mm |
Fit Notes
Wide rings can feel tighter than slim rings. If a ring has a wider band, choosing the larger size may feel more comfortable.
If you are between two sizes, choose based on how you like the ring to sit: smaller for a secure fit, larger for easier daily wear.
Sizing Support
Unsure about ring size? Email service@thefumaster.com with the product name or link.