Each platform sets its own character limit — and, just as often, a shorter practical point where a post gets cut off or truncated in feed before anyone clicks to expand it. Checking a caption against every limit at once, before posting, catches both kinds of surprise in one pass instead of finding out platform by platform.
Social Post Character Counter
Type a caption once and see its live character count against X, LinkedIn, Instagram, Facebook, and Threads limits. Runs entirely in your browser.
0 characters
X (Twitter) Post
0 / 280
Threads Post
0 / 500
LinkedIn Post
0 / 3,000
Facebook Post
0 / 63,206
Feed view truncates to a "See more" link after roughly 477 characters.
Instagram Caption
0 / 2,200
Only about the first 125 characters show before "more" in feed.
Instagram Bio
0 / 150
TikTok Caption
0 / 2,200
Pinterest Pin Description
0 / 500
YouTube Title
0 / 100
Search results typically only show the first 60-70 characters.
Why one caption rarely fits everywhere the same way
Frequently asked questions
Is the character count exactly what each platform counts?
It's a close approximation, not byte-for-byte identical to every platform's own algorithm. X, for instance, counts URLs as a fixed 23 characters regardless of their real length and weighs some non-Latin characters differently — this tool counts plain characters, which covers the overwhelming majority of everyday captions accurately but can drift slightly for text full of links or certain scripts.
Why does Facebook show such a huge limit?
63,206 characters is Facebook's actual technical maximum for a post, but almost nobody ever writes anywhere close to it — what actually matters day to day is the much shorter point where a post gets truncated behind a "See more" link in the feed (roughly 477 characters), which is called out separately since it's the practical limit that affects whether people read your whole caption without clicking.
Why do some limits have a note about what's actually visible?
A platform's hard character cap and what's actually visible before truncation are often two different numbers — Instagram allows a 2,200-character caption, but only shows about the first 125 in feed. Writing your key message before that cutoff matters more than staying under the technical maximum.
Does this post or save my text anywhere?
No — everything happens locally in your browser as you type. Nothing is sent to a server or stored.
Do emoji count differently?
Some platforms count certain emoji and non-Latin characters as more than one character internally (surrogate pairs in UTF-16, or platform-specific weighting). This tool uses a straightforward character count, which is accurate for plain text but can undercount slightly for emoji-heavy captions on some platforms.