Telegram User ID Explained: What It Is and How It Works
Every Telegram account is assigned a unique User ID at creation. This is a numeric identifier (e.g., 123456789) that permanently identifies the account, regardless of username or display name changes.
What Is a Telegram User ID?
A User ID is a positive integer assigned by Telegram's servers when an account is created. Unlike usernames (which are optional and changeable), the User ID is permanent and immutable. It serves as the primary key for identifying accounts in the Telegram system.
User ID vs. Username
- User ID: Numeric (e.g., 123456789), permanent, assigned automatically, always exists.
- Username: Alphanumeric (e.g., @johndoe), optional, changeable, user-chosen.
For bot development and API work, always use User IDs because they are stable. A user might change their username, but the User ID never changes.
How User IDs Are Assigned
Telegram assigns User IDs sequentially. Earlier accounts have lower IDs. The Telegram founder Pavel Durov reportedly has User ID 1. IDs are never reused, even if an account is deleted.
Finding Your User ID
Use TelegramUserID.com to look up any public username and get the associated numeric User ID. You can also use bots like @userinfobot or check the how-to guide.
Privacy and User IDs
User IDs do not reveal your phone number, email, or any personal information. They are simply numeric identifiers. However, knowing someone's User ID allows bots to send them messages (only if the user has previously interacted with the bot).
Frequently Asked Questions
Is a Telegram User ID the same as a phone number?
No. A User ID is a separate numeric identifier that has no relation to your phone number. Your phone number is hidden from other users unless you explicitly share it. The User ID is assigned by Telegram independently.
Can two accounts have the same User ID?
No. Every User ID is globally unique and never reused. Even if an account is deleted, its User ID is permanently retired and will not be assigned to any new account.
How can I find my own Telegram User ID?
The easiest way is to visit TelegramUserID.com and enter your username. You can also message @userinfobot on Telegram, or extract it from the Bot API if you have a bot token.