Back to Ganoksin | FAQ | Contact

Japanese ring sizes

I am still looking for a translation of Japanese ring size # 18 into
a U.S. size. I tried the Orchid archives, but all I could find was
something that came to a dead end in the Revere Academy site. Can
anyone out there help me? I have a client who has been waiting for
months for some action on his ring request.

Related Article:

Determination of Ring Sizes
By Prof. Dr. Erhard Brepohl

M’lou Brubaker, Jeweler
Goodland, MN I copied this chart from
another site so I can’t say how accurate it is, but I’ve been using
it with no trouble.

Japanese 18 would be U.S. size 9


Try this table:

Steve Brixner


Japanese ring size 18 is equivalent to US size 9 (18.99 mm inside
diameter). Taken from the refernce section of Stuller’s Findings

Paul D. Reilly
The Paul Reilly Company
Colorado Springs, Colorado

size 18 in Japan translates to sz 9 USA

M’lou, I’m sorry that I didn’t see your original post. The reference
chart which I have says: Japanese 18 equals 8 1/4 American.

David Barzilay
Lord of the Rings
607 S Hill St Ste 850
Los Angeles, CA 90014-1718

Happened to look in Jeweler’s Resource by Bruce Knuth and the US
translation of a Japanese size 18 is a US size 9.

Patti Sowell
Rio Grande
Technical Support

M’lou Brubaker

Japanese Ring Size 18 is equal to 8 1/2 US Ring Size. Their 19 is
equal to our 9. Happen to have a souvenier Ring Sizer from a Fellow
tool dealer from Tokyo.


Kenneth Singh
manufacturers of Ring Mandrels in USA.