Line Counter
Count lines in any text — including empty, unique and duplicate lines — and see line-length statistics.
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What does the Line Counter do?
Useful for code, CSV files, lists and logs: the counter shows total lines, non-empty and empty lines, unique and duplicate lines, the longest line in characters and the average line length.
Trailing spaces are ignored when checking for duplicates, so “apple” and “apple ” count as the same line.
How to use the Line Counter
- Paste your text, list or code.
- Read the statistics, which update as you type.
- Use “Copy stats” to save the summary.
Examples
CSV check
A CSV export should contain 1,001 lines (header + 1,000 rows). The counter confirms whether any rows are missing or blank.
Common use cases
- Checking CSV and data exports
- Counting lines of code
- Measuring list sizes
- Finding duplicate entries quickly
Features and benefits
- Private by design — your data is processed on your device and never uploaded.
- Free with no account, no watermark and no usage limits.
- Works on phones, tablets and desktops in any modern browser.
Limitations to know
- A final line break at the end of a file is counted as an extra empty line, as in most editors.
Frequently asked questions
Does it count wrapped lines?
No. It counts actual line breaks, not how text wraps on screen.
What is a duplicate line?
A non-empty line whose trimmed text already appeared earlier.
Is there a size limit?
No fixed limit; processing is local.
Related tools
All text toolsRemove Duplicate Lines
Delete repeated lines from lists while keeping the original order.
Word Counter
Count words, characters, sentences and paragraphs as you type.
Text Sorter
Sort lines alphabetically, numerically, by length or randomly.
Character Counter
Count characters with and without spaces, plus letters, digits and symbols.
Sentence Counter
Count sentences and see average sentence length for clearer writing.
Paragraph Counter
Count paragraphs and see words per paragraph at a glance.