Add Line Numbers to Text
Number every line in your text instantly. Choose no separator, a period, or a closing parenthesis.
Text input
Paste one item per line to add line numbers.
Processing happens locally in your browser; nothing is uploaded.
Numbered outputLine-numbered text based on your selected separator style.
Typical lists process in under 1ms on modern browsers.
How to add line numbers
Number lines in 3 steps
Takes ~5 seconds- 1Paste your text
Add one line of content per row in the input box.
- 2Choose separator
Pick no separator, a period, or a closing parenthesis.
- 3Generate output
Click "Add line numbers" to create numbered lines.
Who should use this tool?
- Editors reviewing long text blocks
- Developers referencing log or config lines
- Teams preparing numbered checklists
Examples
No separator places numbers before each line, followed by a space.
Alpha Beta
1 Alpha 2 Beta
Period mode adds a dot and a space after each number.
Alpha Beta
1. Alpha 2. Beta
Parenthesis mode adds a closing parenthesis and a space.
Alpha Beta
1) Alpha 2) Beta
Add numbered lines quickly
Turn plain text into line-numbered text for reviews, debugging, and references.
Use this line number tool to prefix each line of text with an incrementing number. Choose no separator, a period, or a closing parenthesis, then copy the numbered output instantly. Everything runs locally in your browser for fast, private text formatting.
Apply line numbers using the separator style you need.
- No separator option
- Period option
- Parenthesis option
Paste large text blocks and copy the numbered output instantly.
- Bulk paste
- Preserves line order
- Copy or download easily
Line numbering tips
Keep line breaks consistent so numbering matches your source text.
- Use one logical item per line.
- Choose one separator style and keep it consistent.
- Re-run after edits to refresh line numbers.
Frequently asked questions
Which separators are supported?>
Does this preserve the original line order?>
Is my text uploaded anywhere?>
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