To use this calculator:

1. Select a kids’ Nike size from the dropdown menu.
2. Click the “Convert to Women’s Size” button.
3. The equivalent women’s Nike size will be displayed.

The conversion is based on the chart you provided, covering kids’ sizes from 3.5Y to 7Y and their corresponding women’s sizes.

Note that this calculator only covers the sizes listed in the provided chart. If a size is selected that doesn’t have a direct conversion (which shouldn’t happen with the dropdown), it will display “N/A”.