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Social Media Character Counter — X, Threads, Bluesky, Instagram & LinkedIn

Check your post length across five platforms at once, with accurate handling of full-width CJK characters and URL shortening.

About this tool

This tool counts characters in your text against the limits of five major social media platforms simultaneously: X (Twitter), Threads, Bluesky, Instagram, and LinkedIn. It handles full-width Japanese and CJK characters correctly (X counts them as 2 units each), and can treat URLs as a fixed 23-character length to match X's t.co automatic shortening behavior.

How to use

  1. Type or paste your post text into the input field.
  2. Character counts and progress bars update instantly for all five platforms.
  3. Enable the URL toggle if your text contains links, to simulate X's URL shortening.

When to use this tool

  • Writing a post that needs to fit within X's 280-character limit, especially with Japanese or Chinese text.
  • Checking whether a caption fits within Instagram's 2,200-character limit before publishing.
  • Comparing how much space your text takes across different platforms before deciding where to post.
  • Checking LinkedIn posts against the 3,000-character limit for articles and status updates.

Frequently asked questions

Which platforms are supported?

X (280), Threads (500), Bluesky (300), Instagram (2,200), and LinkedIn (3,000). All five are checked simultaneously.

Why does Japanese text count as more on X?

X weights full-width characters (Japanese, Chinese, Korean, etc.) as 2 units each, while ASCII counts as 1. This tool applies that weighting for X only.

How are URLs counted?

When the URL toggle is on, URLs count as 23 characters for X (t.co shortening) and as actual length for the other platforms.

Are the character limits guaranteed to be accurate?

They are based on publicly documented rules as of 2026 and are a close approximation. Platforms may update their rules without notice.

Is my text sent to a server?

No. All counting happens in your browser. Your text is never transmitted.

Does this work offline?

Yes. Once the page has loaded, all counting runs locally.

What is the character limit for X?

280 units for standard accounts. Full-width characters count as 2 units each.

Is this tool free?

Yes, completely free with no sign-up required and no usage limits.

Everything is calculated locally in your browser — your text is never sent to a server. Character counting rules are based on each platform's publicly documented limits as of 2026.