TikTok Character Limit: Every Field
The current limits, where your text actually gets cut off, and a free tool to check your draft.
The short answer
TikTok captions allow 2,200 characters, with some accounts seeing an expanded 4,000-character limit that TikTok has been rolling out. The bio is a tiny 80 characters, and comments are capped at 150.
TikTok truncates captions after roughly one line in the feed, and captions compete with the video itself for attention. Keywords in the caption (and spoken in the video) feed TikTok's increasingly search-like discovery, so the modern play is a short, keyword-rich caption rather than a wall of hashtags.
TikTok character limits by field
| Field | Limit |
|---|---|
| Caption | 2,200 characters (4,000 on some accounts) |
| Bio | 80 characters |
| Comment | 150 characters |
| Username | 24 characters |
Limits are set by the platform and occasionally change; figures reflect the current publicly documented caps.
Drafting a post? Paste it into our free character counter to see the exact character count as you type - including emoji and spaces - with platform limit presets built in.
Open Character Counter →Frequently Asked Questions
Writing effectively within the limit
TikTok is becoming a search engine, and captions are its metadata. Write captions the way you'd write a search query someone might type - '3 ingredient high protein breakfast' - and say the same keywords out loud in the first seconds of the video. Save deep context for a pinned comment, where the 150-character limit forces you to be surgical.
Checking limits for another platform? See our guides for Twitter (X), Instagram, LinkedIn, YouTube, and Facebook.