Scripts, captions and posts land better read aloud. Kaizen Speech Studio turns your text into natural AI voiceover — 700+ voices, MP3/WAV export, fully offline on Windows.
Prefer to listen in the browser first? Try the free Text to Speech tool.
Everything that matters for length limits: characters with spaces (the number platforms actually enforce), characters without spaces, words, sentences, paragraphs and lines — all updating live as you type. Your text never leaves the browser, so it's safe for drafts, ads and anything confidential.
| Platform / field | Limit |
|---|---|
| X (Twitter) post | 280 characters |
| SMS (one segment) | 160 characters |
| Google title tag (display) | ~60 characters |
| Google meta description | ~160 characters |
| Instagram caption | 2,200 characters |
| YouTube title | 100 characters |
| LinkedIn post | 3,000 characters |
The limit checks above track the first five automatically — green means room to spare, amber means you're within 10%, red means over.
Social platforms and ads enforce characters; essays, articles and books are measured in words. This tool shows both, but if you mainly work in words (with reading time), the dedicated Word Counter adds reading-time and keyword-density views. Cleaning up copied text first? Run it through Remove Line Breaks, then adjust capitalisation with the Case Converter.
Voiceover scripts have invisible length limits too — about 150 spoken words per minute. Once your script fits, Kaizen Speech Studio reads it in any of 700+ natural AI voices and exports MP3/WAV, entirely offline on Windows.
Both numbers are shown: characters with spaces (what most platforms count) and characters without spaces. Line breaks count as one character each, matching how X, Instagram and SMS measure length.
X/Twitter posts allow 280 characters, Instagram captions 2,200, SMS 160 per message segment, Google title tags display well up to ~60 characters and meta descriptions up to ~160.
No. Counting happens entirely in your browser with JavaScript — nothing you type or paste leaves your device.
Words are sequences of letters, numbers or symbols separated by whitespace. Sentences are split on . ! ? followed by a space or end of text — the same rule most word processors use.