Shoe size calculator inches to shoe size

Calculate Shoe Size

Formulas

The formulas to calculate your shoe size based on your foot length are:

\[ \text{USM} = (3 \times L) - 22 \]

\[ \text{USF} = (3 \times L) - 21 \]

\[ \text{USC} = (3 \times L) - 9.67 \]

Where:

What is a Shoe Size?

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.

Example Calculation

Let's assume the following value:

Using the formulas to calculate the shoe sizes:

\[ \text{USM} = (3 \times 10) - 22 = 8 \]

\[ \text{USF} = (3 \times 10) - 21 = 9 \]

\[ \text{USC} = (3 \times 10) - 9.67 = 20.33 \]

The Men's Shoe Size is 8, Women's Shoe Size is 9, and Children's Shoe Size is 20.33.