Your feet are determined to be flat if almost the entire bottom of your foot, including the arch, touches the ground when you walk or stand. You can tell the extent of your flat feet by performing a simple "wet footprint test" on a dry surface—if you see a complete imprint of the bottom of your foot without an inward curve, you have flat feet.
Managing flat feet is all about reducing strain and providing proper support to prevent pain and fatigue.

Here is a concise guide on how to care for them: