Add Line Numbers
Number every line of your text with custom start, step, separator and zero-padding. It runs entirely in your browser — no signup, no installation, and nothing you paste or drop leaves your device.
How to Add Line Numbers to Text
This tool adds line numbers to any text in a single click — useful for scripts, quotes, reference lists, or excerpts you want to cite line by line. Paste your text into the box, choose where the numbering should start and how large the step between numbers should be, then pick a separator style such as a dot, colon, or pipe. If you enable zero-padding, numbers like 1 and 12 are written as 01 and 12 so columns stay aligned. The numbered result appears instantly in a second box, where you can copy it with one click. Everything is processed locally in your browser: your text never leaves your device, there is no upload, no signup, and no file limits.
Zeilen in Texten nummerieren
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What is Add Line Numbers?
Add Line Numbers is a free online text tool built for writers, editors, students and anyone cleaning up copy. Number every line of your text with custom start, step, separator and zero-padding In practice you paste your text into the input box, pick the separator, start number, step and zero-padding, and then copy the numbered text or download it as a file.
Nothing you paste is uploaded: the conversion runs as JavaScript inside your browser tab, so drafts, manuscripts and internal documents stay on your machine.
How to use Add Line Numbers
- Paste your text into the input box.
- Pick the separator, start number, step and zero-padding.
- Copy the numbered text or download it as a file.
Add Line Numbers FAQ
Is Add Line Numbers free to use?
Yes. Add Line Numbers is completely free and needs no account, no trial and no payment details. Every feature on the page is available without limits.
Is my data uploaded anywhere?
No. Add Line Numbers runs entirely in your browser, so the text, file or number you enter never leaves your device.
Does Add Line Numbers work on a phone or tablet?
Yes. It works in any modern browser on desktop, tablet and phone. There is no app to install and no account to create.
How do I use Add Line Numbers?
Paste your text into the input box. Pick the separator, start number, step and zero-padding. Copy the numbered text or download it as a file.