Open the Settings app on your iPhone, iPad, or Mac
Tap your name at the top
Tap Sign-In & Security
Tap Change Password
Enter your device passcode if prompted
Enter your new Apple ID password
Confirm the new password
Tap Change or Done to save
If you are using a web browser, go to appleid.apple.com
Sign in with your Apple ID
Select Sign-In and Security
Choose Password
Enter your current password
Enter your new password
Confirm the new password
Save the changes