Text Tools
Find the longest line in a text block instantly.
Use this longest line finder to identify the longest line in pasted text, logs, lists, and copied content for formatting checks and quick analysis.
Use this longest line finder to identify the longest line in pasted text, logs, lists, and copied content for formatting checks and quick analysis.
Use longest line finder when you need a fast browser-based result without extra setup. It works well for quick checks, one-off tasks, and routine formatting or calculation work.
Read step-by-step usage guidance, best practices, and common mistakes.
See common questions and answers about input, output, and tool usage.
Review practical input and output examples before running the tool.
Find similar and supporting tools for adjacent actions and follow-up tasks.
Input
short much longer line mid
Output
Longest line length: 16 Line number: 2 much longer line
The tool finds the longest line and shows where it appears.
Input
one line only
Output
Longest line length: 13 Line number: 1 one line only
If there is only one line, that line is returned.
Fix: This tool works line by line, not by paragraph blocks.
Fix: If there is one line only, that one line is the result.
Fix: This tool returns the longest single line only.
It finds the longest line in a text block and shows its length and position.
Yes. The full visible line length is counted, including spaces.
The tool returns the first longest line it finds.
Line Counter counts how many lines exist, while Longest Line Finder identifies the line with the greatest length.
Yes. It is useful for any multi-line text.