Aside from the paper ring size chart, one of the most accurate at-home sizing methods is a ring sizer. Ring sizers can be found online for as cheap as $4. The process is quite simple: "you feed ...

Use a ring-sizing chart to convert the measurement. Most retailers have sizing charts you can refer to, but you can also find plenty of conversation charts online.

The average ring size for men is 8 and a half (57 millimeters) and 6 (51.9 millimeters) for women, according to jewelry company Taylor & Hart. Internet bling: The 15 best places you can buy ...

Oura advertises eight different ring sizes on its website. Rings start at $300 and prices go up depending on the style and color -- Oura also has a monthly subscription price of $6.