Social Media Character Counter

Count characters for any social media post free online. Live counters for X/Twitter, Instagram captions, LinkedIn posts, and Facebook with platform-specific limits.

Browser only.

How to Use This Tool

Write or paste your postType the content you plan to publish

Check every platform at onceSee your character count against four platform limits simultaneously

Trim as neededAdjust before publishing to fit the platforms you're using

Social Media Character Counter is a free online tool that works entirely in your browser — no signup, no data uploaded, no limits.

One Piece of Content, Four Different Length Rules

Cross-posting the same announcement to X, LinkedIn, Instagram, and Facebook means juggling four different length conventions in your head, or worse, finding out after publishing that your carefully written post got cut off mid-sentence on one platform because you were only checking against another's limit.

This counter checks your text against all four major platform limits simultaneously, so one piece of writing tells you immediately whether it fits everywhere or needs platform-specific trimming.

X's Limit Rewards Editing, Not Just Counting

Hitting exactly the character limit on X often produces a cramped, run-on post. Some of the most shared tweets are well under the maximum, because the discipline of cutting unnecessary words tends to produce punchier, more shareable writing than simply filling available space.

Instagram's Real Constraint Isn't the Limit — It's the Truncation Point

Instagram allows a generous character count, but visible caption text gets cut short with a "more" link well before that technical maximum. The practical lesson is to front-load your hook and call to action in the first couple of lines, treating everything after the likely truncation point as bonus content for readers who tap through, not as guaranteed visible text.

Frequently Asked Questions

Each platform designed its limit around its own product philosophy — X was built around brevity from the start, while LinkedIn and Facebook favor longer-form professional and personal updates. There's no universal 'correct' length; it's platform-specific by design.

Not necessarily. Some of the best-performing posts on X are shorter than the maximum, since brevity itself often reads as more confident and shareable. Filling every available character isn't inherently better than a concise, punchy shorter post.

Instagram truncates captions after a certain point with a 'more' link, which means your most important message — the hook, the call to action — needs to land before that truncation point. Caption length awareness helps you front-load what matters.

Yes, hashtags count as regular characters on every major platform. A caption packed with twenty hashtags consumes significant character budget that could otherwise go toward the actual message, which is worth factoring in when planning a post.

Generally yes, for any cross-posted content. A post crafted for X's brevity often reads as oddly clipped on LinkedIn, and a LinkedIn-length post dumped onto X either gets truncated or split across multiple posts. Tailoring length to platform convention produces better results than copy-pasting identically everywhere.