The formula to estimate Foot Width (FW) is:
\[ FW = \frac{SS \times 3 - 22 + \frac{FL}{5}}{3} \]
Where:
Foot width is a measurement that indicates how wide a person’s foot is across the widest part. It is an important measurement for finding comfortable and well-fitting shoes. Foot width can vary significantly from person to person and is not always proportional to foot length or shoe size. Understanding your foot width can help you choose shoes that provide better support and comfort.
Let's consider an example:
Using the formula to estimate Foot Width:
\[ FW = \frac{10 \times 3 - 22 + \frac{11}{5}}{3} = \frac{30 - 22 + 2.2}{3} = \frac{10.2}{3} \approx 3.4 \, \text{inches} \]
This means that the estimated foot width for a person with a shoe size of 10 and a foot length of 11 inches is approximately 3.4 inches.