Need sizing help? With a range of spinning, bold, delicate and dainty rings to choose from, you may not only be stuck for choice, but also on your ring size. When it comes to choosing your ring size, the key is to find a size that fits your finger perfectly.
So what is the perfect fit? Ideally, it should go over your knuckle with some friction when it's being put on and taken off. Follow our sizing guide below, and purchase our NAJO Ring Sizer, with its belt style design, simply slip the end through the buckle to form a ring and the letter facing the arrow will be your perfect ring size.
Please refer to the table below for ring size comparisons. Many rings can also be resized.
| Najo Size | USA | British | Inside Circumference | Inside Diameter |
| 3 | E 1/2 | 44.20 mm | 14.07 mm | |
| 4 | H 1/2 | 46.80 mm | 14.88 mm | |
| 5 | J 1/2 | 49.30 mm | 15.70 mm | |
| X Small | 6 | L1/2 | 51.90 mm | 16.51 mm |
| Small | 7 | N 1/2 | 54.40 mm | 17.32 mm |
| Medium | 8 | P 1/2 | 57.00 mm | 18.40 mm |
| Large | 9 | R 1/2 | 59.50 mm | 18.95 mm |
| X Large | 10 | T 1/2 | 62.10 mm | 19.76 mm |
| 11 | V 1/2 | 64.60 mm | 20.57 mm | |
| 12 | X 1/2 | 67.20 mm | 21.39 mm |
Finding the right ring size is essential—it's about comfort, security, and the seamless integration of the piece into your daily life. For more ring sizing tips and tricks, visit our NAJO Guides | How to Ring Size post.
