Does it count blank lines?

Yes. The tool counts total lines and also shows how many are completely empty.

Can I paste a 10,000-line log file?

Yes. Local processing handles large text blocks without server lag.

Is my pasted code saved anywhere?

No. Counting is done in your browser's memory and is gone when you close the tab.

Why is line count useful for developers?

Line count helps estimate project size, track progress, and validate data (e.g. CSV row count). You can exclude empty lines to count only code or content lines.

Can I count code lines excluding comments?

Yes. Use "Count by code" and select the language (JavaScript, Python, HTML, CSS). The tool then shows code, comment, and blank line counts.

行数カウンター

When working with large datasets, server logs, or source code, knowing the exact line count is essential. The Line Counter analyzes text and returns the total line count, including blank vs. filled lines. It runs locally in your browser and can handle large files without sending your data to our servers for this processing.

無料 · 制限なし · ブラウザで処理

使い方

1Paste your text, list, or code into the input area.
2The tool instantly calculates the total number of lines.
3Review the breakdown of empty vs. populated lines.

よくある質問

Does it count blank lines?: Yes. The tool counts total lines and also shows how many are completely empty.
Can I paste a 10,000-line log file?: Yes. Local processing handles large text blocks without server lag.
Is my pasted code saved anywhere?: No. Counting is done in your browser's memory and is gone when you close the tab.
Why is line count useful for developers?: Line count helps estimate project size, track progress, and validate data (e.g. CSV row count). You can exclude empty lines to count only code or content lines.
Can I count code lines excluding comments?: Yes. Use "Count by code" and select the language (JavaScript, Python, HTML, CSS). The tool then shows code, comment, and blank line counts.