Select your gender and enter the total measurement of your foot in inches into the calculator. The calculator will evaluate your shoe size based on the length of your foot and sex.
Shoe Size Formula
The following three formulas are used to calculate your shoe size based on your foot length.
USM= (3 * L) - 22
USF= (3 * L) - 21
USC= (3 * L) - 9.67
- Where L is the length in inches
- USM is men’s size
- USF is females size
- USC is children’s size
Shoe Size Definition
A shoe size is a standard way of displaying the length of a shoe so that people can more easily understand the proper size for their feet.
Shoe Size Example
How to calculate shoe size
- First, measure your foot
Measure the length of your foot from heel to toe in inches.
- Select the proper formula
Select the correct formula from above based on your gender.
- Calculate your shoe size
Using the length of your foot and inches, and the equation above, calculate your proper shoe size.
FAQ
How do I accurately measure my foot for shoe sizing?
To accurately measure your foot, place your foot on a piece of paper and draw around it. Measure the length from the heel to the longest toe in inches. This measurement is what you’ll use in the shoe size calculator.
Can these formulas be used for all types of shoes?
While these formulas provide a general guideline for shoe sizing, different types of shoes (like athletic vs. dress shoes) may fit differently. It’s always recommended to refer to specific brand sizing charts when available.
What if my foot measurement is between sizes?
If your foot measurement falls between sizes, it’s generally recommended to go with the larger size for comfort, especially if you plan to wear socks with your shoes.
Is there a difference in shoe sizing internationally?
Yes, shoe sizes can vary significantly between different countries. The formulas provided are primarily for US shoe sizes. If you’re purchasing shoes from international brands, you may need to consult a global shoe size conversion chart.
