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What are the basic requirements for usernames?


New usernames have two basic requirements:

  • They must be at least five characters long and start with a letter
  • Only letters and numbers can be used; no special characters, spaces nor symbols

All usernames at Khan Academy are unique. If you try to pick one that is already in use, that username will be rejected. Try a new one!

Moreover, we strongly encourage that you do not use real names or any other information that could be used to identify someone when creating a username or background biography, or in general when posting questions or answers.