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Line Counter

Count lines in text with advanced statistics including blanks, duplicates, words, characters, paragraphs, and line lengths. Includes tools to remove empty or duplicate lines.

Updated

What is the Line Counter?

Line Counter is a powerful, free online tool that instantly counts lines in any text while providing comprehensive statistics and practical cleaning utilities.

Whether you're a developer checking code length, a writer analyzing documents, or someone cleaning up lists and data, this tool delivers real-time insights including total lines, blank lines, non-blank lines, duplicate detection, word/character counts, paragraph breakdown, and detailed line length metrics.

Key Highlights:

  • Real-time counting as you type
  • Advanced stats: longest/shortest/average line length
  • One-click removal of empty lines or duplicates
  • Numbered live preview with copy options
  • Fully client-side, private, and lightning fast

How it works

The Line Counter works entirely in your browser for maximum speed and privacy.

  1. Paste or type your text into the large editor area.
  2. Statistics update instantly — total lines, blank vs non-blank, words, characters, paragraphs, duplicates, and line length metrics are calculated using robust line-splitting logic that handles \n, \r\n, and \r endings.
  3. Use action buttons to clean your text:
  • Remove Empty Lines — strips whitespace-only lines.
  • Remove Duplicates — keeps the first occurrence of each unique trimmed line.
  1. Preview pane shows numbered lines (updated after cleaning) so you can review changes.
  2. Copy the processed text or all statistics with dedicated buttons.

All processing uses pure, efficient JavaScript functions. No data ever leaves your device.

Examples

Code File Analysis

Analyze a JavaScript file and clean it up

function hello() {

  console.log("Hello");
  
  return true;
}
 
Total Lines: 6
Non-blank: 4
Blank: 2
Duplicates: 0
Words: 8

List Cleanup

Count and deduplicate a shopping list

apples
bananas
apples
oranges

bananas
 
Total Lines: 6
Non-blank: 5
Duplicates: 2
After removing duplicates: 3 unique items

Frequently asked questions

What does this line counter count exactly?

It counts every line break, including trailing ones, and accurately handles different line endings (Unix, Windows, Mac).

Does it count blank/empty lines separately?

Yes. It clearly separates total lines, non-blank lines, and blank lines (lines with only whitespace).

Can it remove empty lines or duplicates?

Absolutely. Use the "Remove Empty Lines" or "Remove Duplicates" buttons. Changes appear in the live preview, and you can copy the cleaned text.

Does it work with code or programming files?

Yes. It’s excellent for code analysis — it counts lines properly, detects duplicates, shows longest lines (useful for refactoring), and works great with JavaScript, Python, HTML, etc.

Is my text private?

Completely. Everything runs client-side in your browser. Nothing is sent to any server.

What statistics does it provide?

  • Total, non-blank, and blank lines
  • Duplicate lines count
  • Total characters and characters (no spaces)
  • Word count
  • Paragraph count
  • Longest, shortest, and average line length

Can I upload a file?

Currently, paste text directly. For very large files, copy-paste works reliably in modern browsers.

How are duplicates detected?

Duplicates are detected based on trimmed content (whitespace ignored for comparison) while preserving original first occurrences in order.

Why is average line length useful?

It helps writers and developers understand readability and formatting consistency in documents or code.

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