The circumference of a 5cm ring is 50mm. Currently, there are four mainstream ring size standards on the market: mainland ring size, Hong Kong ring size, American ring size, and European ring size. They all have rings with a circumference of 50mm, and the specific selection needs to be based on the comparison table used by the store.
Mainland version ring size comparison chart
According to the table below, the ring with a circumference of 50mm corresponds to the mainland version size 10 and a diameter of 15.9mm.
Hong Kong Ring Size Comparison Table
According to the table below, the ring with a circumference of 50mm corresponds to the Hong Kong version number 9 and a diameter of 15.2mm.
US Ring Size Comparison Table
According to the table below, a ring with a circumference of 50mm corresponds to a US size of around 6 and a diameter of 16.5mm.
European Ring Size Comparison Table
According to the table below, the ring with a circumference of 50mm corresponds to a European size of 50 and a diameter of 15.92mm.
