Sign in to your Google Account privacy page. Click Personal info. Click Birthday.

Google needs to make sure you're old enough to use a Google Account without a parent's supervision. If you don't confirm your age within 14 days, your account won't work anymore. To keep using your account, you need to provide your correct birthday.

Go to Google Account Page. Into the Google Account page, Click on the Personal Info & Privacy. Click on the Birthday. Click on the Pencil icon and change your Date of Birth.

When you sign up for a Google Account, you may be asked to add your birthday. Knowing your birthday helps us use age-appropriate settings for your account. For example, minors may see a warning when we think they've found a site they may not want to see.