Regular measurement is unavoidable for such long periods of time. Then move to the right to see a how long the feet of babies or infants are in average at that age and b infants shoe size corresponds to this foot length. Upon measuring, place the foot on a tape measure and measure it from the heel to the longest toe. However, you must ensure that it has an intact inner sole. She says something to the effect that she wears a size six, but because a size seven are so comfortable, she buys a size eight.
Good product except the product isn't the best. I've tried a few different brands and this isn't the worst but it's not the best. Personally I would recommend another brand.
Kids shoe size chart at a glance: Use these shoe size conversion charts for kids and easy-to-use kids shoe size calculators to convert from the length of your kids' foot in inches or centimeters to US-size, UK-size, European sizes and International sizes. Kids' Shoe Size Converter Convert Kids' Shoe Size Between US, UK, EU, AU and JP When shopping shoes for your kids Online, you should not let different shoe sizing systems stop you from having the cutest or coolest shoes! (Kids grow an average of half a size every three months!) There should be about a half inch between the end of the longest, fully extended toe and the end of the shoe. Fit the widest part of the foot to the widest part of the shoe so it bends with the bend of the foot.