How much wider is a 4E shoe?

Excuse me, but I'm curious about the specifics of shoe sizing. Specifically, when it comes to a shoe size labeled as 4E, how much wider is it compared to a standard shoe size? I understand that shoe widths can vary greatly, and I'm interested in understanding the exact measurements or comparative differences when it comes to this particular size designation. Could you please elaborate on the width increase associated with a 4E shoe size, perhaps in relation to a standard width shoe for comparison?