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Line Counter

Count total, non-empty, blank and unique lines, and find the longest line.

Free browser toolRuns in your browserNo sign-up
0
Total lines
0
Non-empty
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Blank
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Unique lines
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Longest line

About the Line Counter

A line counter tells you how many lines a block of text or code contains, which is handy for logs, CSV data, lists and source files.

It separates total lines from non-empty and blank lines so you know how much of your text is actual content.

It also counts unique non-empty lines and measures the longest line, which helps when checking for duplicates or overly long rows.

Key features

  • Total, non-empty and blank line counts
  • Unique line count
  • Longest line length
  • Instant results in your browser

How to use

  1. 1Paste or type your text or code.
  2. 2Line counts update instantly as you type.
  3. 3Check unique lines and the longest line at a glance.

Examples

Count lines
Input: three lines with one blank
Output: 4 lines total, 3 non-empty, 1 blank

Blank lines are counted separately from lines with content.

Frequently asked questions

How are lines counted?
The text is split on line breaks, supporting Windows (CRLF) and Unix (LF) endings. Each segment between breaks counts as one line.
What counts as a blank line?
A line that is empty or contains only spaces or tabs is counted as blank.
Is my text uploaded anywhere?
No. Counting happens entirely in your browser, so your text never leaves your device.

Helpful guides

WritingHow to Count Characters AccuratelyRead guideWritingCharacter Count vs Word Count: What Is the Difference?Read guide

Continue your workflow

Open a related tool to prepare your files or refine the finished result.