You can change your birthday in TikTok's account settings, but only if your account is less than 30 days old

TikTok locks your birthday after 30 days to prevent misuse of age-restricted features. If you entered the wrong date when you signed up and it has been fewer than 30 days, you can edit it yourself in the app. If more than 30 days have passed, you will need to contact TikTok support and provide proof of your identity.

The reason for this restriction is that TikTok uses your birthday to control access to certain content and features. Changing it after the window closes requires verification that you are the account owner.

Key Takeaways

  • You can change your birthday yourself only within 30 days of creating your account through the Profile settings menu.
  • After 30 days, TikTok locks the birthday field and you must contact support with a government ID or other identity proof.
  • The birthday you set determines whether you can see age-restricted videos and use certain features like gifts and live streaming.
  • TikTok support may take several days to respond to birthday change requests, so plan ahead if you need the change for a specific reason.

How to change your birthday within the 30-day window

Open TikTok and tap the profile icon in the bottom right corner. Then tap the three horizontal lines (the menu icon) in the top right. Select "Settings and privacy," then tap "Account," then "Personal information."

You will see a field labeled "Date of birth." Tap it and use the date picker to select the correct date. TikTok will ask you to confirm the change. Once you confirm, the new birthday is saved when ready.

If the date field is grayed out or you cannot tap it, the 30-day window has closed and you will need to use the support process instead.

What to do if your account is older than 30 days

Go to the same menu: Profile icon → three lines → Settings and privacy → Account → Personal information. The birthday field will be locked. Look for a link or button that says "Need help?" or "Contact us about this" near the birthday field.

Tap that link and TikTok will open a form where you can explain that you need to change your birthday. You will be asked to upload a photo of a government-issued ID (a driver's license, passport, or national ID card). The ID must show your real name and date of birth clearly.

Submit the form and wait for a response. TikTok support typically replies within 3 to 7 business days, though it can take longer during busy periods. Once they verify your identity, they will unlock the field and you can change the birthday yourself, or they may change it for you.

Why TikTok locks your birthday after 30 days

Your birthday determines which content you can see and which features you can use. If you are under 18, TikTok restricts access to videos marked as for mature audiences. If you are under 13, you cannot use the app at all in most countries — TikTok will disable the account if it detects a birthday that young.

The 30-day lock prevents people from changing their age to bypass these restrictions after the account is already active. It also protects accounts from being altered by someone who gains unauthorized access.

What happens if you enter the wrong birthday by accident

If you made a typo during signup and realized it when ready, change it right away while you still can. The sooner you fix it, the easier the process is.

If you entered a birthday that makes you appear younger than you actually are, and your account is now locked, the support process is straightforward — you just need to prove your real age with an ID. If you entered a birthday that makes you appear older, the same process applies, though TikTok may ask follow-up questions to confirm the change is legitimate.

What documents TikTok accepts as proof of identity

TikTok accepts government-issued photo IDs that show your name and date of birth. This includes a driver's license, passport, national ID card, or state ID card. The document must be current or expired by no more than a few years — TikTok's support team will let you know if yours is too old.

You do not need to send the original document. A clear photo or scan is sufficient. Make sure your name and date of birth are legible in the image. Cover or blur any information you do not want to share, such as your address or ID number, as long as the name and date of birth remain visible.

How your birthday affects what you see on TikTok

TikTok creators can mark videos as "not for minors," which restricts them to viewers aged 18 and up. If your birthday shows you are under 18, you will not see those videos in your feed. You also cannot send or receive gifts, which is a feature that lets viewers tip creators during live streams.

If your birthday shows you are under 13, TikTok will not let you use the app at all — the account will be suspended or deleted. This is because of laws in most countries that restrict data collection from children under 13.

Frequently Asked Questions

Can I change my birthday more than once?

Within the 30-day window, yes — you can change it as many times as you need. After 30 days, you can request one change through support with identity proof. TikTok does not state a limit on how many times you can request changes after that, but frequent requests may trigger additional scrutiny.

What if I do not have a government ID?

Contact TikTok support and explain your situation. They may accept other forms of identity proof, such as a school ID, a utility bill with your name and address, or a bank statement. Ask what alternatives they accept before you submit a request.

Will changing my birthday affect my videos or followers?

No. Your videos, followers, and all other account data remain unchanged. Only the birthday field in your profile is updated.

How long does it take TikTok support to respond?

Most requests are answered within 3 to 7 business days. During peak times or if TikTok needs additional information from you, it can take longer. Check your email regularly for messages from TikTok support.

What if TikTok denies my birthday change request?

If your ID does not match the name on your account, or if TikTok suspects the request is fraudulent, they may deny it. You can submit another request with clearer documentation or contact support again to ask why it was denied and what additional proof they need.