TikTok User ID Finder
Enter any @username and get the permanent numeric user ID behind it. No signup.
What a TikTok user ID is
Behind every @username is a long number that TikTok gives the account when it is created. TikTok lets you change your username once every 30 days, but the user ID never changes, so it is the reliable way to point at one particular account.
How this tool finds it
It opens the public profile page for the username you enter and reads the ID from the profile data TikTok includes in that page. Sometimes TikTok shows automated visitors a bot check instead of the profile. When that happens the tool tells you so rather than claiming the account doesn't exist, and a second try a minute later usually works. Each visitor can run 12 lookups a minute.
Why it matters when an account is sold
A username takes a few taps to change, which makes it a weak way to identify an account in a sale. Write down the user ID before you pay and look it up again after the handover. If the number is different, you were given a different account, even if the username matches.