Go to the Roblox website and sign in to your account
Click the gear icon or settings menu
Select Settings
Open the Account Info tab
Click the edit icon next to your password
Enter your current password
Enter your new password
Confirm the new password
Click Save
If you forgot your password, use the Forgot Password or Forgot Username/Password option on the login page
Follow the reset link sent to your email or phone number
Create a new password and save it