Is there a way to find out your password of your Wifi?

[Alephy]

6. Check the router

The original password should be printed there, on the router.

If you changed it, you still can get to it by going to the admin 'site' of the router.

It is a local site only available in your local network and it should be accessible through an address like this:

192.168.1.1

If it lets you in, you can go to the wireless section and look up or change your password.

The trick is whether you'll be able to access the site. I can, from my phone, because it remembers my password. If you changed it and your device does not remember it, I can only think of the previous suggestion: reset.