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Code 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

Pasting source code into a line counter usually raises one specific question: how many lines actually contain code, as opposed to blank lines left for readability? This page opens the counter for exactly that use case.

Paste a file, a function or a diff and get the raw total line count (matching what your editor's gutter would show), the count of non-empty lines, and how many are blank — a quick way to sanity-check a file size limit, a code review budget, or a "no more than N lines per function" style rule. The longest-line figure also flags a line that may need wrapping.

The count runs locally: no source code is ever sent to a server. This tool only counts lines and characters — it does not parse syntax or detect comments, so "non-empty" means any line with a visible character, comment or code alike.

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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.