Yes, you can change your birthday on TikTok, but only once every 30 days

TikTok allows you to change the birthday on your account through your privacy settings. The change takes effect when ready, but the platform enforces a 30-day waiting period between changes — if you alter your birthday today, you cannot change it again for 30 days. This limit exists to prevent account misuse and age-related fraud.

The birthday you set on TikTok controls which features you can access. Users under 13 cannot use direct messaging, duets, or stitches. Users under 18 see restricted content and have limited comment visibility. If you change your birthday to a younger age, TikTok will automatically restrict your account to match that age group. If you change it to an older age, restrictions lift when ready.

You do not need to provide identification or proof to change your birthday. TikTok takes your word for it. This means the change is when ready and reversible (after 30 days), but it also means you should be honest about your actual age if you are under 18, since age-gating exists to protect younger users from certain content and contact.

Key Takeaways

  • Open your TikTok profile, tap the three-line menu, select Settings and Privacy, then Account, then Date of Birth to change your birthday.
  • You can change your birthday only once every 30 days, and the change takes effect right away.
  • Lowering your age will when ready restrict your account to features available to younger users, including blocking direct messages and duets.
  • TikTok does not ask for proof of age when you change your birthday, so the change relies on your honesty.
  • If you are under 18, changing your birthday to an older age removes safety protections designed for younger users.

Step-by-step: changing your birthday on TikTok

Open the TikTok app and tap your profile icon in the bottom right corner. This takes you to your profile page. Tap the three horizontal lines (the menu icon) in the top right of your profile.

From the menu, select Settings and Privacy. Then tap Account. Scroll down and tap Date of Birth. A calendar picker will appear. Select your month, day, and year, then tap Confirm. Your birthday is now updated.

If you see a message saying you cannot change your birthday yet, you are still within the 30-day waiting period from your last change. You will have to wait until that period ends before you can change it again.

What happens when you lower your age on TikTok

If you change your birthday to make yourself younger, TikTok when ready restricts your account. Direct messaging turns off. You cannot create duets or stitches. Your comments are hidden by default, and other users cannot tag you in videos. These restrictions exist because TikTok's terms of service limit certain features for users under 13 and under 18.

You will also see different content in your For You feed. TikTok's algorithm adjusts what it shows you based on your age. Younger accounts see less mature content, though the filtering is not perfect. If you lower your age and then raise it again after 30 days, your restrictions will lift, but the algorithm may take a few hours to adjust.

What happens when you raise your age on TikTok

If you change your birthday to make yourself older, all age-based restrictions lift when ready. You regain access to direct messaging, duets, stitches, and visible comments. Your For You feed will begin showing content marked for older audiences.

This change is permanent until you change your birthday again (and wait another 30 days). TikTok does not verify your actual age, so raising your age on your account does not require proof. If you are actually under 18, you are removing safety features that TikTok designed to protect younger users from certain content and contact.

The 30-day waiting period explained

TikTok enforces a 30-day cooldown between birthday changes to prevent rapid switching between age groups. This rule stops people from toggling between restricted and unrestricted features, and it makes it harder to evade age-based account limits by changing your birthday repeatedly.

The 30 days runs from the date of your last change, not from the calendar month. If you change your birthday on March 15, you cannot change it again until April 14. If you try to change it before that date, TikTok will show you a message telling you when you can change it next.

Why TikTok asks for a birthday at all

TikTok collects your birthday to comply with child protection laws in the United States and other countries. The Children's Online Privacy Protection Act (COPPA) requires platforms to restrict certain features for users under 13. TikTok uses your stated birthday to enforce these restrictions automatically.

The platform does not verify your birthday against government records or a third-party database. It relies on what you enter when you sign up or what you change it to later. This means the age-based restrictions work only if users are honest about their age. If you are under 13 and claim to be older, TikTok has no way to know.

If you forgot your birthday or entered it wrong at signup

If you made a mistake when you first created your account, you can correct it the same way you would change it intentionally: go to Settings and Privacy, select Account, tap Date of Birth, and enter the correct date. The 30-day waiting period still applies, so if you changed your birthday recently, you will have to wait before you can change it again.

If you cannot remember what birthday you entered, you can check it by going to the same Date of Birth screen. TikTok will show you the birthday currently on file. Write it down or take a screenshot so you know what you are working with.

Frequently Asked Questions

Can I change my birthday on TikTok more than once a month?

No. TikTok enforces a 30-day waiting period between changes. Once you change your birthday, you must wait 30 days before you can change it again. If you try to change it sooner, the app will tell you the exact date when you can make your next change.

Will changing my birthday affect my followers or videos?

Your followers and videos stay on your account. Changing your birthday does not delete your content or unfollow people. However, if you lower your age, your comments will be hidden by default, and other users will not be able to see them or tag you in new videos until you raise your age again.

What if I change my birthday and then change it back within 30 days?

You cannot. The 30-day waiting period applies to any change, whether you are changing to a different age or changing back to your original age. Once you change your birthday, you are locked out of making another change for 30 days, even if you want to undo it.

Does TikTok verify my birthday with a government ID?

No. TikTok does not ask for a government ID or any other proof when you change your birthday. The platform takes your word for it. This means you can change your birthday to any date you want, but it also means the age-based restrictions depend on you being honest.

If I lower my age, can I still see my old videos?

Yes, you can still see your videos. Lowering your age restricts what other people can do (they cannot comment visibly or tag you), but it does not hide your own content from you. Your videos remain on your profile and in your drafts.