Online Line Numbers Adder Tool

Line Numbers Tool

Add professional line numbers to your content with advanced customization options. Perfect for programming, data analysis, text processing, and language analysis applications.

How to Use This Tool

• Input your text: Paste or type your content in the left textarea
• Choose format: Select from decimal, roman numerals, or alphabetical numbering
• Customize settings: Adjust starting number, padding, prefix, and suffix
• Preview in real-time: See instant results as you type or change settings
• Copy results: Use the copy button to get your numbered text
• Export options: Download as text file or copy to clipboard

Advanced Settings

Number Format Decimal (1, 2, 3...) Roman Numerals (I, II, III...) Alphabetical (A, B, C...) Binary (1, 10, 11...) Hexadecimal (1, 2, 3...A, B, C...)

Starting Number

Padding (Zero Fill)

Prefix

Suffix

Separator Dot + Space (. ) Colon + Space (: ) Parenthesis + Space () ) Dash + Spaces ( - ) Pipe + Spaces ( | ) Space only

0

Total Lines

0

Total Characters

0

Empty Lines

0

Processed Lines

Input Text

Numbered Output

Live Preview Mode

Preview updates automatically as you type or change settings.

Text copied to clipboard successfully!

Calculation Details

Feature	Details
Price	Free
Rendering	Client-Side Rendering
Language	JavaScript
Paywall	No

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About This Tool

How It Works?