Word Counter – Free Online Word, Character & Sentence Counter
Live word, character, sentence, paragraph, and reading time counter with limit checker.
Add Line Numbers Utility
Number every line of a text block.
⟨/⟩ Embed this tool on your site
Paste this into any page — the live tool appears with a credit link back here.
✏️ Sketching your tool…
Sponsored: Recommended offer →
About Add Line Numbers Utility
Prepend sequential numbering to every line, with configurable padding and a separator.
📐 Methodology & Reference Accuracy:
Calculations, formulas, and conversions execute locally in your web browser. Output models are benchmarked against official reference standards and updated for 2026.
🔒 This tool runs entirely in your browser. Nothing is uploaded or stored.
Background reading: Add Line Numbers on Wikipedia. More: all text tools.
Frequently Asked Questions about Add Line Numbers Utility
How do I use the Add Line Numbers Utility?
Open the Add Line Numbers Utility and use the controls in the workspace below: number every line of a text block. Results appear instantly in your browser, with nothing to install, sign up for, or pay for.
Is the Add Line Numbers Utility free?
Yes. The Add Line Numbers Utility is completely free, like every tool in the PrimeFreeTools library. There are no accounts, subscriptions, or usage limits.
Does the Add Line Numbers Utility store or share my data?
No. The Add Line Numbers Utility runs with JavaScript in your browser, so what you enter never leaves your device and nothing is stored on a server.
What can I use the Add Line Numbers Utility for?
Prepend sequential numbering to every line, with configurable padding and a separator. You will find it grouped under Text Tools together with 34 other free tools on the PrimeFreeTools homepage.
Related Articles & Guides
Sep 13, 2026
Add Line Numbers: Make Hunting for Line 37 Possible
Number every line of a text block.
Read post