A variety of shoe-sizing systems exist, depending on the part of the world that you're in. The shoe-sizing system in the United States and Canada uses a numbered scale from 1 to 13 to indicate the length of a child's foot. Adult shoe sizes also use a scale from 1to 13 such that an adult size one is the next largest size after a child's size 13. Shoe manufacturers commonly use their own variations of this standard shoe-sizing system. Your child's generic shoe size is therefore only a starting point for finding the shoe for your child's feet.
Step 1
Place them your child's foot flat on the floor while the he's wearing a regular pair of socks.
Step 2
Uncurl his toes if necessary, so that his feet are straight as possible.
Step 3
Measure the total length of your child's foot from the edge of the heel to the tip of the big toe. Use a tape measure or ruler that measures in inches.
Step 4
Repeat this procedure for the other foot. Use the measurement for the largest foot to calculate the shoe size.
Step 5
Compute your child's shoe size with the formula: Shoe size = (3 x foot length) -9.5.
Let your child's largest foot be 7 1/4 inches in length for this example. Your child therefore has a shoe size of (3 x 7.25) - 9.5 = 11.25.
Step 6
Round the result from Step 4 to the next largest half integer. This will provide to obtain the best-fitting shoe size for your child.
The result from Step 4 was 11.25 in this example. The best size for your child is therefore 11.5.
Things You'll Need
- Socks
- Tape measure
- Shoe size chart
- Calculator
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