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Code Line Counter

Count code lines, comment lines, and blank lines. Supports JavaScript, Python, Java, C/C++, CSS, HTML, and more.

Source Code
Analysis
💡 Definition

Code Line Counting

  • Line counting categorizes source code into: code lines (actual logic), comment lines (documentation), and blank lines (whitespace).
  • SLOC (Source Lines of Code) is a common software metric.
📖 How to use

Step by Step

  • Paste source code in the left panel
  • Select the language for accurate comment detection
  • See breakdown of code, comment, and blank lines
  • Stats include total, percentages, and ratios
🎯 Use cases

When to use

  • Project size estimation
  • Code review metrics
  • Technical documentation
  • Comparing codebase sizes

Frequently Asked Questions

What counts as a comment line?▾
Single-line comments (// for JS/Java/C, # for Python) and multi-line comments (/* */ for JS, """ for Python). A line with both code and a comment counts as code.
What are blank lines?▾
Lines that are empty or contain only whitespace characters. They're important for readability but don't contain logic.

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