Resource
Character Counter
Paste any text and see characters, words, lines, and reading time at once — plus whether it fits Twitter, SMS, and meta-description limits.
Check if Text Is Under the Limit
Will it fit? Check any text against Twitter, SMS, meta-description, and other limits at once, and see exactly how far over you are.
Overview
The most common length question is binary: does this fit, or do I have to cut? This loads a post that runs just past Twitter's 280-character limit so you can see the check that matters — over by how much, on every platform at once. Instead of pasting into each box to find out, you get the whole panel: what fits, what is over, and the exact number of characters to trim. The amount-over figure is the one that tells you how hard the cut has to be.
How to use this resource
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Paste the text
A post, caption, or message near a length limit.
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Scan every limit
Twitter, SMS, meta description, and more, checked at once.
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Cut by the number
See exactly how many characters you are over.
Why This Works
- The fit question is binary, and the over-by number answers it exactly
- Every common limit is checked at once, not one box at a time
- The amount over tells you how hard the cut has to be
Best for
- Fitting posts and captions to a limit
- Checking several platforms at once
- Knowing exactly how much to cut
Not for
- Model context limits — use the Context Window Estimator
- Token budgets — use the Token Counter
FAQ
Does the character counter check my text against Twitter and meta-description limits at the same time?
Yes, the PLATFORM NOTES panel checks every limit at once: X/Twitter (280), SMS (160), meta description (160), Google title tag (60), Instagram (2,200), and LinkedIn (3,000), instead of pasting into each box. For each it shows either an over-by figure (Twitter reads "over by 38 characters" in the example) or how many characters are left.
Can I use this to check if my prompt fits an AI model's context limit?
That is a different job this tool routes away from: its own note says "AI model inputs are measured in tokens, not characters," and characters, words, and tokens are distinct units. Character Counter counts keystrokes against publishing limits; for a model's context budget the report points you to the Token Counter and Context Window Estimator instead.
Are these character counts exact for every platform field?
They count "the units a text field counts," but the NOTES flag a caveat: some emoji and combined scripts may count as more than one character, and language affects word and sentence boundaries. So the over-by number is reliable for plain text; if a post is emoji-heavy, treat the platform panel as close rather than guaranteed to match every field byte-for-byte.
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Token budget planning for real workloads: how much of the window a transcript actually consumes, what is left for the answer, and how much headroom remains.
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Prompt Cleanup Examples (Before & After)
A set of before-and-after examples showing exactly what prompt cleanup removes — and what it deliberately leaves alone.
Related tools
Tool
Character Counter
Count characters, words, lines, and reading time — with live platform-limit checks for Twitter, SMS, meta descriptions, and more.