If you live in the United States or Canada, measure in inches. If you live in the UK or Australia, measure in centimeters. For example, if your longest toe is the toe right next to your big toe, read the number right in front of that toe to find your precise foot length. You can also get your feet measured at a shoe store or in the shoe department of a department store.

If the socks you want to buy are listed in sock sizes instead of foot lengths, move on to the next method.

Some brands may also list sock sizes as shoe sizes, in which case you can just choose a pair that corresponds to your shoe size.

These are US shoe sizes, which also apply to Canada and Australia (women’s sizes only). UK women’s size equivalent: 2-5 Euro women’s size equivalent: 35-38 Online sellers often have a handy sizing chart you can use.

UK women’s size equivalent: 5. 5-8 UK/Australia men’s size equivalent: 5-8 Euro women’s size equivalent: 36-40 Euro men’s size equivalent: 38-42

UK women’s size equivalent: 8. 5-12 UK/Australia men’s size equivalent: 8. 5-11-5 Euro women’s size equivalent: 41-44 Euro men’s size equivalent: 42-45

UK/Australia men’s size equivalent: 12-15 Euro men’s size equivalent: 45-48 Some larger socks come in a variety of widths if your feet are particularly wide for your shoe size.

Kids socks are generally sized by age, rather than an actual size. This makes it easy to pick the right size for your kids, no matter where you are in the world.

If your toddler seems to outgrow things quickly, skip the toddler socks and move up to the next biggest option so they have room to grow. They’ll last longer this way!

After about age 10, most children have big enough feet to start wearing small adult socks.