Line Counter Online

Count lines of code, blank lines, comments

Enter code/text

Statistics

Total number of lines1
Line with content0
Empty line1
Line of code0
Comment line0
Longest line0 characters
Average length/line0 characters

Line Counter Online - Free professional code line counting tool for Developers

Tan Phat Digital's Line Counter tool is the perfect solution for developers, project managers, and QA engineers who need to quickly and accurately analyze and analyze code. Counting the total number of lines of code (LOC) is an important metric in software development to estimate effort, track productivity, and evaluate codebase complexity. The tool not only counts the total number of lines but also classifies the details: lines with content (non-empty lines), empty lines (blank lines), actual lines of code (comments removed), and comment lines (// # /* */). Additional statistics include longest line length and average line length - useful for evaluating code style and readability. Multi-language support with popular comment syntax: // for JavaScript, TypeScript, Java, C++, C#, Go, Rust; # for Python, Ruby, Shell, YAML; /* */ for multi-line comments. Completely offline processing in the browser, no code sent to the server, ensuring absolute security for proprietary code. Realtime interface - statistics update as soon as you paste or edit code. Completely free, unlimited file size, no account registration required.

Outstanding features

Count the total number of lines (Total Lines) accurately
Count lines with content (Non-empty Lines) - remove blank lines
Count separate Empty/Blank Lines
Count actual lines of code (Code Lines) - remove comments
Count comment lines (Comment Lines) - // # /* */
Longest Line length statistics (Longest Line)
Calculate the average line length (Average Line Length)
Supports multilingual comment syntax: //, #, /* */
Realtime statistics - updated immediately upon editing
Offline processing on the browser, code security
No file size limit
Monospace font interface is easy to read code
Completely free, no registration required

Why do we need to count lines of code? Application of LOC metrics in software development

Lines of Code (LOC) is one of the most basic metrics in software engineering, used since the early days of the industry. Although LOC is not a perfect measure of productivity or quality, it still has many important practical applications. Estimation and Planning: LOC helps estimate effort for similar projects in the future - if project A has 10,000 LOC and takes 3 months, similar project B can be estimated equivalently. Tracking Progress: Tracking LOC over time shows team velocity and project progress. Code Review: Knowing the number of lines of code helps allocate time for code review - 500 LOC review is different from 5000 LOC. Complexity Assessment: Large codebases are often more complex, requiring more testing and maintenance. Technical Debt: Comment/code ratio, blank lines show code quality and documentation level. Billing and Contracts: Some contracts are calculated according to LOC delivered. Refactoring Decisions: Compare LOC before and after refactoring to evaluate simplification. However, remember: LOC does not measure quality - 100 lines of good code can be more valuable than 1000 lines of bad code. Use LOC as one of many metrics, not the only metric.

Benefits when used

  • •Estimate effort and timeline for projects based on historical data
  • •Track team productivity and velocity over time
  • •Allocate time is suitable for code review sessions
  • •Evaluate the complexity and maintainability of the codebase
  • •Identify technical debt through comment/code ratio
  • •Compare before/after refactoring to measure improvement
  • •Report progress to stakeholders with specific data
  • •Benchmark against industry standards and best practices
  • •No need to install complicated tools like cloc, sloccount
  • •Code security - do not upload to any server

Detailed instructions on how to count lines of code online

  1. 1Open the code file in your editor (VS Code, Sublime, etc.)
  2. 2Select All (Ctrl+A) and Copy (Ctrl+C) the entire code
  3. 3Paste (Ctrl+V) into the input box on the left of the
  4. 4tool See automatically updated statistics in the right panel
  5. 5Analyze metrics: Total Lines, Non-empty, Empty, Code, Comments
  6. 6See Longest Line and Average Line Length to evaluate code style
  7. 7You can edit directly in the input box to test different scenarios

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