Number of Lines in a String
Count how many lines a multi-line string contains. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Number of Lines in a String
- 1. Paste your text. Enter the multi-line text you want counted into the input pane, such as a log file, a list, or a block of code.
- 2. Decide whether to ignore empty lines. Turn on Ignore empty lines if blank lines shouldn't count toward the total, useful when the text has spacing between sections that isn't meaningful content.
- 3. Read the line count. The output pane shows the total number of lines, calculated instantly as you edit the input.
When to use Number of Lines in a String
Number of Lines in a String counts how many lines a block of text contains, with an option to skip blank ones. It's for quick checks on log files, lists and pasted content where you need the line total without opening a full editor.
- Checking a log file's size before processing. You pasted a log dump and want to know roughly how many entries it holds before deciding whether to filter it further or process it as-is.
- Verifying a list has the expected number of items. A colleague sent a list of names or IDs, one per line, and you want to confirm the count matches what was promised before importing it.
- Counting non-blank content in a formatted document. A document has blank lines between sections that shouldn't count as content. Turning on Ignore empty lines gives you the real line count of meaningful text.
- Estimating effort from a code diff. You pasted a chunk of code and want a rough sense of its size in lines before deciding how much review time to allocate.
Examples
Count lines
Input
a b c
Output
3
About the Number of Lines in a String tool
Number of Lines in a String does its work locally, right in the browser. Count how many lines a multi-line string contains. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the String Tools collection on EditSafely, a set of 159 small, focused String utilities that share the same instant, private workspace.
You can shape the output with the Ignore empty lines setting, and the result refreshes the moment you change it. A worked example further down the page shows exactly what the tool produces for a real input.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Does Number of Lines in a String cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.