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Line Counter

Count lines in any text live as you type: total, non-empty and blank lines, plus longest and average line length.

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Total lines
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Non-empty lines
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Blank lines
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Longest line (chars)
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Average line length
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Result

Whether you're checking a script against a line limit, sizing up a CSV export, or estimating how many rows a code review will touch, eyeballing line breaks in a long paste is slow and error-prone — and counting by hand only gets worse once blank lines and trailing whitespace get involved.

This line counter reports the total line count exactly the way a text editor numbers lines — including blank ones — plus how many of those lines actually contain text versus how many are empty, the length of the longest line, and the average line length in characters. Everything updates instantly as you type or paste, with no button to press.

The count runs entirely in your browser, so source code, logs and unpublished drafts never leave your device. If you also need word or character counts, this site has a dedicated word counter and character counter — this tool focuses purely on lines.

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Executed in Browser

Your files and inputs never leave this device. Processing runs completely offline. 100% Secure.

Accepted Formats & Rules

  • Live total line count, non-empty line count and blank line count.
  • Longest line length and average line length, both in characters.
  • Handles pasted files of any size, including full source code, without sending data to a server.

Key Benefits

✓ Complete privacy: the text is counted entirely in your browser and never leaves your device.
✓ Instant feedback: every stat updates live with each keystroke — no button to press.
✓ Editor-accurate counting: the total line count matches what your code editor's line numbers would show, including trailing blank lines.

Use Cases

  • • Check a script, subtitle file or config against a strict line-count limit before submitting or uploading it.
  • • Paste a source file or diff to see how many lines actually contain code versus how many are blank padding, without opening an editor.
  • • Get a live read on a pasted list or poem's structure — total lines, blank lines, and the longest line's length — as you write or edit it.