Reasons to change your birthday or age on your Roblox account
In order to protect the safety and privacy of its users, Roblox set age restrictions and minimum age limits. The official position of Roblox is to only allow players on the platform who are above 13-year old or older.
How to change your age on Roblox account (PC desktop)?
If you are currently 13 years of age or older and you made a mistake when registering for Roblox, these are the steps that you must do in order to change the age or birth date on your account:
How to change age or birthday on Roblox account using mobile
If you have no access to a computer, or if you mainly play Roblox on your smartphone or tablet, you can change your age by following the steps below. The interface of the Roblox Settings menu on mobile is a little different to account for the screen size but the general steps should still be the same.