Add numbering to each line of your text instantly for code, notes, scripts, and lists.
The Add Line Numbers tool helps you automatically place numbers before each line of text. It is useful for formatting code, reviewing drafts, organizing notes, preparing scripts, and making long text easier to reference.
To use this tool, paste or type your text into the input box. Then choose your preferred numbering style, set the starting number, and decide whether empty lines should also be numbered. Once you click the Add Line Numbers button, the tool instantly generates a numbered version of your text in a clean output box.
This tool is especially helpful for developers, students, teachers, editors, and anyone who wants cleaner structured text. Since it works directly in your browser, it is fast, simple, and private.
Adding line numbers means placing a number before each line in a block of text. This makes it easier to reference specific lines when reviewing code, editing documents, or discussing written content.
Example: Line A → 1. Line A
If your text has multiple lines, each line gets its own number in sequence based on the format you choose.
This tool is ideal for developers, writers, students, teachers, editors, and researchers. Whether you are formatting code, preparing notes, or reviewing structured content, adding line numbers makes text easier to understand and discuss.