A circumference of 6.5 centimeters refers to a ring circumference of 65mm. Currently, the mainstream ring size standards on the market are divided into four types: Hong Kong version ring size, mainland version ring size, American version ring size, and European version ring size. They all have rings with a circumference of 65mm, 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 6.5 centimeters corresponds to mainland size 25 and a diameter of 20.4mm.
Hong Kong Ring Size Comparison Table
According to the table below, the ring with a circumference of 6.5 centimeters corresponds to a Hong Kong version size of 23 or 24, with a diameter of 20.4-21mm.
US Ring Size Comparison Table
According to the table below, the ring with a circumference of 6.5 centimeters corresponds to a US size of around 11 and a diameter of 20.6mm.
European Ring Size Comparison Table
According to the table below, the ring with a circumference of 65mm corresponds to the European size 65 and a diameter of 20.69mm.
