1  Open https://accounts.snapchat.com
by using the green button below.
Open Snapchat account page >
 2  Enter your username and password
Related: Did you forget your current Snapchat password? Learn how to reset it >
 3  Change my password
is the button you need to choose in the account page.
 4  Enter your current password
and the new password that you want twice. Click on Change password and you’re done.
 ✓ Result
Once you click now, your password will be modified immediately.