Add Line Numbers

Add line numbers to a block of text.

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Features

Automatic Numbering

Instantly adds a sequential number and a period to the beginning of each line.

Handles Empty Lines

Correctly numbers all lines, including any empty lines within the text.

Code & Data Friendly

Ideal for numbering lines of code, log files, data lists, or manuscripts for easy reference.

About Add Line Numbers

A simple utility to automatically add line numbers to any block of text. This tool is incredibly useful for creating references in documents, debugging code, or analyzing log files where line-specific context is important. The numbering is applied instantly.

How to Use Add Line Numbers

  • 1
    Paste Your Text

    Paste your unnumbered text into the left text area.

  • 2
    View Numbered Text

    The numbered version of your text will automatically appear in the right text area.

  • 3
    Copy Your Result

    Click the "Copy Result" button to copy the newly numbered text to your clipboard.

Add Line Numbers - Number Your Text or Code Online