Add Line Numbers

What is the Add Line Numbers?

Number each line of text. Numbering lines makes long text easy to reference in reviews, transcripts, legal drafts and code snippets shared outside an editor.

How to use the Add Line Numbers

1. Paste or type your your text into the box (a sample is pre-filled so you can see how it works).
2. Results update automatically as you type; you can also press Calculate.
3. Read the output: result.
4. Use the 📊 chart to see the result visually, then copy or share it.

Where the Add Line Numbers helps in real life

You are sending a contract draft to a colleague and want comments like “see line 42” instead of “the paragraph near the bottom.” Pasting the text adds numbers to every line in one step.

A teacher shares a poem with a class and wants students to cite specific lines in their essays. Numbered lines make discussion and marking faster.

Common mistakes to avoid

• Numbering wrapped lines, which change when the text is resized.
• Forgetting to remove numbers before pasting text back into a document.
• Counting blank lines when only text lines should be numbered.
• Using inconsistent separators after the numbers.

💡 Practical tip: Line numbers refer to actual line breaks, so add them after the text is final to avoid renumbering.

Tips for better results

• Remove empty lines first if blank lines should not be numbered.
• Choose a separator such as a period or tab that suits the destination.
• Keep an unnumbered copy of the original text.

Related tools