Which social media platforms does this character counter support?

It compares copy for X, Instagram, LinkedIn, Facebook, TikTok, YouTube, Pinterest, Threads, and Bluesky. Each card labels whether it is checking a post, caption, description, or another platform-specific content type.

How does the tool count social media characters?

The counter measures the text locally and includes spaces, punctuation, emoji, and line breaks in the character total. X also receives a practical 23-character estimate for each URL, so the X result is clearly labeled as an estimate rather than an official API calculation.

Are these social media limits exact?

The cards are publishing guidelines based on the labeled platform content types, but platforms can change limits and use different limits for titles, bios, captions, posts, and descriptions. Always confirm a critical post in the destination platform before publishing.

Does it count words and sentences too?

Yes. Alongside the platform comparison, the tool shows characters, words, sentences, and lines so you can tighten copy without switching to another counter.

Is my social media text uploaded?

No. Counting and platform comparisons happen in your browser. The tool does not require a social account, API key, or server upload.

Why might X count my text differently?

X uses special accounting for URLs and some Unicode characters rather than simply using the raw visible string length. This tool uses a practical 23-character URL estimate and explains that it is an estimate, so the final composer should be your source of truth.

Free tools

Free Social Media Character Counter

Write once, check every platform: compare your copy with X, Instagram, LinkedIn, TikTok, YouTube, Threads, Bluesky, and more.

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How it works

Social Media Character Counter: methodology and worked example

How this tool computes its result

The counter measures the text directly in your browser and reports characters, words, sentences, and lines. It then applies each platform rule to the same text: X uses a practical 23-character estimate for each URL, while the other platform cards use ordinary Unicode-aware character counts against their labeled post, caption, description, or title limit. The result is a live remaining/over-limit status and progress bar for every supported platform, with no text upload or account connection.

Worked example

Paste a 300-character launch post and select X. The tool shows 300 regular characters against X’s 280-character post limit and marks the post 20 characters over. Select Instagram and the same copy is comfortably below the 2,200-character caption limit. If the copy contains https://example.com/a-long-page, the X card treats that URL as an estimated 23 characters, which is closer to how X counts links than using the raw URL length.

When not to use this tool

Platform policies and limits change, and a character limit does not tell you how much of a post appears before a “more” fold or how the copy will perform. Treat the counts as a publishing check, not a guarantee of reach, engagement, or visual fit. YouTube has separate title and description limits, so choose the matching content type when checking a video asset.

Common mistakes

- Confusing character count with word count. Spaces, punctuation, emoji, and line breaks can all change the space a post consumes.
- Treating every platform as if it uses the same content type. A YouTube description, YouTube title, Instagram caption, and social bio have different limits.
- Assuming the X URL estimate is an official API result. The tool intentionally labels it as an estimate because URL and Unicode accounting can change.

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