Ring Size Conversion Chart. Add as Widget to Your Website. Originally in 1945 the divisions were based on the ring inside diameter in steps of 164 th inch.
Find your measurement in the column C. It shows ring sizes in both. Already know your ring size but your favorite jeweler works with different ring size scale.
Ring Size Chart - Convert ring sizes between ring size scales.
30 rows Ring Size Conversion Chart IndiaChinaJapan South America Diameter mm. United Kingdom UK Ireland Australia and New Zealand ring size system US. For a baseline ring size C has a circumference of 40mm. It shows ring sizes in both.