Word and Character Limits for Every Social Media Platform (2026)
The exact caption, bio and post limits for Instagram, X, Facebook, LinkedIn, TikTok and Threads — and how much actually gets seen before "...more" cuts it off.
EDTechToolsCenter EditorialEvery platform enforces a hard character limit, but the number that actually matters for engagement is usually much smaller — the point where the app truncates your text behind a "...more" link. Write past that point and most readers never see the rest.
Caption and post limits by platform
- Instagram: 2,200 character hard limit on captions, but only the first ~125 characters show before "more" — put your hook there.
- X (Twitter): 280 characters for a standard post; longer posts are available to subscribers but still perform best kept short.
- Facebook: no hard limit on post length, but posts under ~80 characters get noticeably higher engagement than long-form ones.
- LinkedIn: 3,000 character limit, truncated after roughly the first 210 characters (about 3 lines) before "see more".
- TikTok: 2,200 characters for captions, though most viewers only see the first line or two on the feed.
- Threads: 500 character limit per post — Threads is intentionally shorter-form than Instagram captions.
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Bio and name-field limits
- Instagram bio: 150 characters.
- X bio: 160 characters.
- LinkedIn headline: 220 characters; About section: 2,600 characters.
- TikTok bio: 80 characters.
- Facebook Page 'About' short description: 255 characters.
Why the truncation point matters more than the hard limit
A caption that's technically allowed doesn't mean it gets read. Instagram, LinkedIn and TikTok all fold long text behind a "more" tap, and most scrolling users won't tap it. Treat the truncation point — not the platform's maximum — as your real word budget for anything that needs to land without extra effort from the reader.
A quick workflow for staying in range
- Draft your caption, then check its character count with a word/character counter as you write.
- Move your key message or call-to-action before the platform's truncation point, not after it.
- Add hashtags after the visible cutoff where possible — they don't need to be seen to be indexed.
- Keep a resized version of your graphic ready for each platform's dimensions alongside the caption, so the whole post is platform-correct in one pass.
Tools used in this article
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Frequently asked questions
2,200 characters maximum, but only about the first 125 characters show before the caption is truncated behind "...more" — write your key point within that range.
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