You can change your birthday in TikTok's account settings, but the platform limits how often you can do it

To change your birthday on TikTok, open the app and tap your profile icon in the bottom right. Go to Settings and privacy, then Account, then Personal information. Tap your birthdate and select a new one from the calendar. TikTok will save the change when ready.

The catch: TikTok only lets you change your birthday once every 30 days. If you try to change it again before 30 days have passed, you'll see a message saying you have to wait. This limit exists partly to prevent account takeovers — if someone gains access to your account, they can't rapidly change your age to unlock restricted features.

Your birthday affects what content TikTok shows you and what features you can use. If you're under 13, TikTok restricts direct messaging and some other tools. If you're 13 to 17, you get a more limited version of the platform than adults do. Getting your age right matters because these restrictions are tied to your account, not just what you tell the app.

Key Takeaways

  • Change your birthday through Settings and privacy > Account > Personal information, then tap your birthdate and select a new one.
  • TikTok enforces a 30-day waiting period between birthday changes to prevent unauthorized account access.
  • Your birthday determines which features you can use and what content TikTok recommends to you.
  • If you entered the wrong birthday when you created your account, you can correct it the same way, but you'll have to wait 30 days before changing it again.
  • TikTok does not ask for ID to verify your age, so the birthday you enter is based on your word alone.

Why TikTok asks for your birthday in the first place

TikTok collects your birthday for two reasons: legal compliance and feature control. In the United States and most other countries, platforms have to follow laws about how they treat users under 13. The Children's Online Privacy Protection Act (COPPA) in the US requires that platforms get parental consent before collecting data from anyone under 13. TikTok's response is to restrict accounts for users under 13 — they can't use direct messages, live streams, or duets with other users.

The second reason is business. TikTok's algorithm and advertising system work differently depending on your age. Younger users see different ads and different content recommendations than adults do. Your birthday is how TikTok sorts you into the right bucket.

TikTok does not verify your birthday against government ID. It takes whatever you enter at face value. This means you could enter a false birthday when you sign up, and TikTok would have no way to know. That's why the 30-day change limit exists — it's a speed bump against someone taking over your account and when ready changing their age to unlock features.

What happens if you change your birthday to a younger age

If you change your birthday to make yourself younger, TikTok will when ready restrict your account. Direct messaging turns off. You lose access to live streams. Duets and stitches (features that let you respond to other videos) become unavailable. You also can't use gifts during live streams or send gifts to creators.

These restrictions stay in place until your account ages into the older bracket again. If you change your birthday to say you're 14 when you were previously listed as 18, you'll have those restrictions active until your account's calculated age reaches 13 again — which means you'd have to wait years, or change your birthday again after the 30-day window closes.

TikTok doesn't warn you before you make the change. The restrictions explore the moment you save the new birthday. If you made a mistake, you have to wait 30 days before you can change it back.

What happens if you change your birthday to an older age

If you change your birthday to make yourself older, you gain access to features that were previously locked. If you were listed as under 13, you suddenly get direct messaging. If you were 13 to 17, you get the full adult version of the app with all features available.

TikTok doesn't verify the change, so there's nothing stopping you from doing this. However, you should know that changing your age to access features you're not actually old enough to use violates TikTok's terms of service. TikTok's stated policy is that accounts must be at least 13 years old, and users aged 13 to 17 agree to the restricted feature set.

If TikTok detects that you're underage and using an adult account, the platform can disable your account. This is rare and usually happens only if someone reports you or if TikTok's moderation team flags your behavior as inconsistent with your stated age. But it's a real risk.

The 30-day waiting period and account security

The 30-day limit between birthday changes is a security measure. If someone gains access to your account — through a weak password, a phishing email, or a data breach — one of the first things they might do is change your age to unlock features or to make the account harder for you to recover.

By forcing a 30-day wait, TikTok makes it harder for an attacker to make rapid changes to your account. If you notice unauthorized access, you have time to regain control before the attacker can make permanent changes to your account settings.

This is why it matters to use a strong, unique password on TikTok and to enable two-factor authentication if the app offers it. (TikTok does offer two-factor authentication through Settings and privacy > Account > Two-factor authentication.) The 30-day limit is a backup, not a substitute for basic account security.

If you need to change your birthday but the 30-day window hasn't closed

If you made a mistake entering your birthday and the 30-day waiting period hasn't passed, you have limited options. You can contact TikTok support through the app by going to Settings and privacy > Help > Report a problem. Explain that you entered the wrong birthday and ask if they can override the 30-day limit.

TikTok's support team sometimes makes exceptions for genuine mistakes, especially if you entered a birthday that makes your account unusable (for example, if you entered a date that makes you appear to be 150 years old). But there's no may provide they'll help, and response times can be slow.

If you can't wait 30 days and TikTok support won't help, your only real option is to create a new account with the correct birthday. This means losing your followers, your videos, and your account history. For most people, waiting 30 days is the better choice.

Privacy considerations when you change your birthday

When you change your birthday, TikTok stores the change in your account history. The app doesn't show you a log of past birthdays you've entered, but TikTok's servers keep that data. This information could theoretically be accessed by TikTok employees, law enforcement with a warrant, or — in the event of a data breach — by attackers.

If you're changing your birthday because you want to hide your real age from TikTok, understand that the app collects other data about you too: your location, your device information, your viewing habits, and your contacts. Your birthday is just one data point. Changing it alone won't make you anonymous on the platform.

If you're concerned about your privacy on TikTok, the more important steps are to limit what personal information you share in your bio and videos, to adjust your privacy settings so only approved followers can message you, and to think carefully about what you post. Your birthday is less of a privacy risk than the content you create and the people you interact with.

Frequently Asked Questions

Can I change my birthday on TikTok if I'm under 13?

Yes, you can change your birthday through the same settings menu. However, if you change it to a younger age, TikTok will restrict your account. If you change it to 13 or older, you'll gain access to more features, but doing so violates TikTok's terms of service if you're actually younger than the age you claim.

What if I forgot my birthday and can't remember what I entered?

Go to Settings and privacy > Account > Personal information. Your current birthday is displayed there. If you need to change it, you can do so when ready unless you changed it within the last 30 days. If you're locked out by the 30-day limit, contact TikTok support and explain the situation.

Does changing my birthday affect my followers or my videos?

No. Your followers stay with you, and your videos remain on your account. The only thing that changes is which features you can use and what content TikTok recommends to you based on your age bracket.

Can someone else change my birthday if they have my password?

Yes. If someone gains access to your account, they can change your birthday just as easily as you can. This is why two-factor authentication matters — it makes it much harder for someone to log in even if they know your password. Enable it in Settings and privacy > Account > Two-factor authentication.

Will TikTok ask me to verify my age with ID?

TikTok does not currently require ID verification to change your birthday. The app relies entirely on what you enter. Some countries are moving toward age verification laws that would require platforms to check ID, but as of now, TikTok takes your word for it.