Yoav finds some great online tools to convert sizes of Shoes, rings and clothing for Men and Women in international countries.
Ring Size Conversion: Use this ring size tool to determine what your size is in the U.K., France, Switzerland and more.
Women’s Clothing Conversion: With this tools, you can find out what size clothing you should buy for France, Italy, and a number of other countries.
Men’s Clothing Conversion: This tool works the same way as the women’s tool, but it comes in men’s sizes.
International Show Size Conversion Charts: Convert shoe sizes from Europe, Mexico, U.K. and more. Link.