Converting women’s shoe sizes into men’s shoe sizes varies by country and also by manufacturer. South Korea is an exception, as they do not offer separate sizing systems for men, women, girls, or boys; instead, they measure in millimeters. Women’s and men’s equivalent shoe sizes alternate between having the men’s sizes and the women’s sizes indicated by larger numbers; this varies by country. You can find your shoe size in any country’s system by measuring your feet and having those measurements handy when you shop.
Remove your shoe from the opposite foot to your dominant hand. Wear whatever socks or stockings you intend to wear with the shoes you are considering. Trace the foot on the paper. Your feet are usually slightly different sizes, and most of the time, the foot opposite your non-dominant hand is the largest.
Measure the tracing from the furthest points at either end. Write the measurement in millimeters, centimeters, and inches and label them clearly.
Consult conversion charts, such as I18guy’s International Shoe Size Conversion Chart or Gempler’s Shoe Size Conversion Chart. Using the measurements taken from tracing your foot, you can narrow down the size of shoes most likely to fit you. No matter what sizing system is used, all sizing systems are based on basic measurements.
Unfortunately, since shoe sizes vary between manufacturers, one women’s U.S. size 8 shoe may not be the same as another women’s U.S. size 8 shoe. If and when possible, try to ask sellers of shoes what the actual measurements of the shoes are. This is the most accurate way to gauge whether or not they will fit you without trying them on.
When possible, try shoes on to ensure that they fit you well before buying them.
In the United States and Canada, women’s shoe sizes are smaller than men’s shoe sizes by somewhere between 1.5 and 2 sizes. For instance, if you wear a size 6 in men’s shoes, you would wear a 7 1/2 or 8 in women’s shoes.
In Japan, women’s and men’s shoe sizes differ by half a size. A women’s size 25 is equivalent to a men’s size 25.5.
U.K. sizes are similar to Japanese sizes in that women’s sizes are a half-size smaller than men’s. However, sizes are written differently. A women’s size 4 1/2 is equivalent to a men’s size 5.