Add Line Numbers

Why Do You Need a Line Numbering Tool

When organizing lists, writing steps or commenting code, we often need to add numbers to multiple lines. This tool adds numbers with custom start value, format and separator in one click.

Core Features Explained

1. Start number: Customize the starting number.
2. Number format: Plain number, number+dot, parentheses, brackets or hash.
3. Separator: Space, tab, colon or dot+space.

How to Use the Tool

1. Enter multi-line text into the left input box.
2. Set start number, format and separator.
3. Click "Convert" to see the result.