How do I find out what my ring size is?

I'm at home and would like to buy a ring online but I don't know my ring size. Is there any way to measure for my ring size at home?

check out this chart. You have the size in mm. Now you need a strip of paper to form into a ring that fits over the widest part of your finger. Then measure the length of the strip. http://www.wedunit.com.au/pages.php?pageid=33

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