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X (Twitter) Username Character Limit
The X (Twitter) username limit is 15 characters. Paste your text below to see how much room is left.
Free, no sign-up, runs in your browser. Updated 2026-11-02.
The short answer
X (Twitter) allows up to 15 characters in the username.
What counts toward the limit
Letters, numbers and underscores only.
How much people actually see
The @handle shows on every post and in replies.
Tips for fitting your username
- Keep it short, since only 15 characters are allowed.
- Avoid numbers that look random.
- Match your other platforms where possible.
How this compares with other limits
| Platform | Field | Limit |
|---|---|---|
| Username | 30 | |
| TikTok | Username | 24 |
| X (Twitter) | Username | 15 |
Limits come from platform help pages and published guides, and platforms change them. Where it matters, confirm in the app. See every limit on the character limits hub.
Frequently asked questions
What is the X username limit?
15 characters.
Are spaces allowed?
No.
Where can I check my text length for every platform at once?
Use the social media character counter, which shows the limit for each platform side by side.