Free Online Line Counter

Count lines, identify duplicates, and analyze line statistics. Perfect for code,...

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Line Counter Features

Total Line Count - Count all lines including empty and non-empty
Duplicate Detection - Find and count duplicate lines in your text
Line Length Stats - Longest, shortest, and average line length
Whitespace Detection - Detect leading and trailing spaces on lines
Uniqueness Ratio - Percentage of unique lines in your text
Real-Time Updates - Stats update instantly as you type or paste

Why Use Free Online Line Counter?

Comprehensive Line Stats

Get total, non-empty, empty, unique, and duplicate line counts all in one view.

Length Analysis

See longest, shortest, and average line lengths to understand your text structure.

Whitespace Detection

Identify lines with leading or trailing spaces that could cause formatting issues.

100% Private

All processing happens in your browser. Your text is never sent to any server.

Common Uses for Line Counter

Code Analysis

Count lines of code, identify blank lines, and find duplicate code lines.

Log File Analysis

Analyze log files to understand entry counts and identify repeated entries.

Data Cleaning

Identify duplicate records and empty entries in data files before processing.

Text Formatting

Detect whitespace issues like leading/trailing spaces that affect text formatting.

How It Works

1

Enter Your Text

Type directly or paste text from any source including code files, log files, or documents.

2

View Line Statistics

Instantly see total lines, empty lines, unique lines, and duplicate counts as you type.

3

Analyze Line Details

Review detailed statistics including line lengths, whitespace detection, and uniqueness ratio.

Tips & Best Practices

Code Line Counting

Paste your code to quickly count lines before commits or code reviews.

Find Duplicates

Use the duplicate count to identify repeated lines that may need to be cleaned up.

Whitespace Issues

Check for leading/trailing spaces that can cause unexpected behavior in code and data files.

Frequently Asked Questions

Lines are counted by splitting text on newline characters. Each line break creates a new line, even if the line is empty. The tool shows separate counts for total lines, non-empty lines, and unique lines.
Total lines counts every line including blank ones. Non-empty lines only counts lines that contain at least one non-whitespace character. This is useful when you want to know how many lines actually have content.
Unique lines counts how many distinct lines exist in your text, ignoring duplicates. If the same line appears multiple times, it's only counted once in the unique count.
Yes! The line counter works great for code. It will show you total lines of code, how many are actual code vs blank lines, and help identify duplicate lines. Many developers use this to check file sizes before commits.
The uniqueness ratio shows the percentage of lines that are unique compared to total lines. A 100% ratio means every line is different, while a lower ratio indicates more duplicate content.

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