Line Counter — Free Online Tool
Last updated: January 2025
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What is Line Counter?
Line Counter counts total lines, blank lines, and non-blank lines in your text — essential for code and data files.
When to use Line Counter?
Use it to count lines in code files, CSV data, lists, log files, and any line-based text content.
How to use this tool
- 1Paste your text or code
- 2Click 'Analyze' to count lines
- 3View total, blank, and non-blank line counts
Examples
| Input | Output |
|---|---|
| (10-line code snippet with 2 blank lines) | Total: 10 | Blank: 2 | Non-blank: 8 |
| (CSV file with 100 rows) | Total: 100 lines |
| (Log file) | Total lines counted for log analysis |
| Line 1 Line 3 | Total: 3 | Blank: 1 | Non-blank: 2 |
| (Empty file) | Total: 1 | Blank: 1 | Non-blank: 0 |
Rules & Behavior
- Lines are separated by newline characters (\n)
- Blank lines contain only whitespace
- Non-blank lines contain at least one visible character
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Frequently Asked Questions
What counts as a blank line?
A blank line is one that contains only whitespace characters (spaces, tabs) or is completely empty. Lines with visible content are non-blank.
How is a line defined?
A line is any sequence of characters ending with a newline character (\n). The last line is counted even without a terminal newline.
Can I use it for code files?
Yes! Paste any code and the tool will count total lines including comment lines and blank lines — useful for LOC (Lines of Code) metrics.
Does it count blank lines separately?
Yes, we show total lines, blank lines, and non-blank lines for complete analysis.
Can it handle large files?
Yes, there's no character limit. Paste large code files or data exports and it will count accurately.