Add Line Numbers

Organize your lists. Add Numeric (1, 2), Roman (I, II), or Alphabetical (A, B) prefixes with custom separators.

8 lines
78 chars

Numbering Options

Start FromCurrent: 1
Separator

Continue with Related Tools

Count Lines

Count items in your list.

Sort Text Lines

Alphabetize your list.

Add Prefix

Add text to start of lines.

What is Add Line Numbers?

The Add Line Numbers tool is the ultimate utility for organizing text. It transforms unstructured lists into referenced data. Whether you need standard numbering 1., legal outlining with Roman numerals IV., or options lists with letters a), this tool handles it all instantly. If you just need to add the same text to the start of every line, try our Add Prefix Tool.

Why Use This Tool?

Legal & Academic

Create exhibits or citations using Roman Numerals (I, II, III). Perfect for outlining formal documents.

Developers

Use Zero Padding (01, 02) to create file lists that sort correctly in every operating system.

Teachers & Surveys

Generate multiple choice questions labeled with Letters (A, B, C) for quizzes and forms.

Premium Features

Multiple Formats

Switch between Numeric (1,2), Roman (I, II), and Alpha (A, B) instanty.

Custom Start

Start your list at any number (e.g., 100), ideal for continuing lists.

Custom Separators

Use dots, parens, colons, or any custom text to divide numbers.

Zero Padding

Automatically pad numbers with zeros (001, 002) for consistent width.

100% Private

Your data is processed locally. No uploads, no storing.

Easy Export

Copy to clipboard or download your numbered list as a file.

How to Use

  1. Paste Text: Enter your list in the input box or upload a file.
  2. Select Style: Choose Numeric, Roman, or Letters from the control panel.
  3. Configure: Set your Start Number and choose a separator like . or ).
  4. Export: Click "Copy Result" or "Save" to get your numbered list.

Frequently Asked Questions

Can I use Roman Numerals?

Yes! You can choose between Uppercase (I, II, III) and Lowercase (i, ii, iii) Roman numerals for stylish or academic list formatting.

Can I label lines with letters like A, B, C?

Absolutely. Select the 'Letters' option to prefix your lines alphabetically. It handles overflow automatically (e.g., Z, AA, AB).

Can I start numbering from a specific number?

Yes. Use the 'Start From' input to begin your list at any number (e.g., 100). This works for Roman numerals and Letters too (e.g., starting at 5 gives you 'V' or 'E').

What is Zero Padding?

Zero padding adds leading zeros to numbers so they all have the same length (e.g., 01, 02... 10). This ensures files verify and sort correctly on computers.

Can I customize the separator?

Yes, you can use any character as a separator. We provide quick presets for Dot (.), Parenthesis ()), and Colon (:), or you can type your own custom string.

Can I upload a file to number?

Yes, you can upload text files (.txt), logs, or CSVs directly. The tool will apply numbering to every line in the file.

Is my data private?

Completely. All processing happens in your browser. No text is ever uploaded to our servers.

Can I download the result?

Yes, once your list is numbered, you can download it as a text file with a single click.

Does it handle blank lines?

Yes, every line including blank ones gets a number. If you wish to ski blank lines, you might want to use our 'Remove Empty Lines' tool first.

Is there a limit to list size?

The tool is extremely fast and can handle lists with thousands of items instantly within your browser.