How are characters counted?

We segment with the browser's `Intl.Segmenter` (grapheme mode), so emoji and combined sequences such as 👨👩👧 are counted as a single character — matching Twitter-like character counting.

How are words counted?

We split on whitespace (spaces, tabs, newlines) and count each non-empty chunk as a word. For languages without explicit word separators (e.g., Japanese), the word number has no real meaning — it is primarily useful for English text.

Why is the UTF-8 byte size shown?

Database column limits, file size budgets, and APIs such as LINE Notify often express limits in UTF-8 bytes. Latin characters use 1 byte each, common Japanese characters use 3 bytes, and most emoji use 4.

No. All counting happens in JavaScript inside your browser. Nothing leaves the page, so drafts and unpublished work are safe.

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Character counter — chars / bytes / lines / words

Count characters, words, lines, paragraphs, and UTF-8 byte size in real time. Toggle whether whitespace and newlines are included. Progress bars show your text against common limits (tweets, 400-character genkō, etc.) — everything stays in your browser.

developertextcount

How to use

Paste any text into the editor and the tool counts characters, words, lines, paragraphs, sentences, and UTF-8 bytes in real time. Toggle Exclude whitespace to ignore spaces, tabs, and newlines. Progress bars below compare your text to common limits (Twitter/X, Japanese 400-character genkō paper, LINE, SMS), useful for social posts and writing projects. The Copy button puts a templated summary on the clipboard.

FAQ

How are characters counted?: We segment with the browser's `Intl.Segmenter` (grapheme mode), so emoji and combined sequences such as 👨‍👩‍👧 are counted as a single character — matching Twitter-like character counting.
How are words counted?: We split on whitespace (spaces, tabs, newlines) and count each non-empty chunk as a word. For languages without explicit word separators (e.g., Japanese), the word number has no real meaning — it is primarily useful for English text.
Why is the UTF-8 byte size shown?: Database column limits, file size budgets, and APIs such as LINE Notify often express limits in UTF-8 bytes. Latin characters use 1 byte each, common Japanese characters use 3 bytes, and most emoji use 4.
Is my text uploaded?: No. All counting happens in JavaScript inside your browser. Nothing leaves the page, so drafts and unpublished work are safe.

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