Number Lines

Choose start, step, separator, zero-padding, and whether blank lines consume a number.

Lines

Start

Step

Separator

Zero-pad width

Text cleanup runs locally in your browser. These tools operate on plain text lines; structured CSV/JSON/XML and regex workflows remain in their dedicated tools.

How to use this Number Lines

Add configurable line numbers to pasted text. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.