Ring Size Chart Guide
Ring sizing systems differ around the world, so one chart fits everyone. This guide explains how to measure your finger accurately, convert between US, UK and Japanese sizes, and avoid sizing mistakes.
How to Measure Your Ring Size
Wrap a flexible tape or strip of paper around the base of the finger, mark where it overlaps, and measure the length. Compare that circumference to a ring size chart, and measure in the evening when fingers are at their largest.
International Size Conversions
| US Size | Circumference (mm) | Diameter (mm) | UK Size | JP Size |
|---|---|---|---|---|
| 5 | 49.3 | 15.7 | J | 9 |
| 6 | 51.9 | 16.5 | L | 12 |
| 7 | 54.4 | 17.3 | N | 14 |
| 8 | 57.0 | 18.2 | P | 17 |
| 9 | 59.6 | 19.0 | R | 19 |
Avoiding Common Sizing Mistakes
Do not measure cold fingers in the morning, and remember the dominant hand is often half a size larger. Wide bands feel tighter than thin ones, so size up half a size for bands wider than 4mm.
Not sure between two sizes? Ask WhatsApp for help, and browse rings that can be made in any size.
Ready to Find Your Perfect Piece?
Factory-direct pricing from our Panyu, Guangzhou workshop. Our team will reply within 24 hours with pricing and availability.
Get a Free Quote Chat on WhatsAppFrequently Asked Questions
What is the average ring size for women?
The average US women ring size is around 6, while the average men ring size is around 9-10. Hands vary widely, so always measure.
How do I measure ring size at home?
Wrap paper or string around the finger base, mark the overlap, measure in millimeters, and match the circumference to a size chart.
What if my ring is between two sizes?
Choose the larger size for comfort, especially for wide bands, or ask for a half size that sits between them.