Convert a String to an Array
Build a JSON, JavaScript, or Python array from a string's parts. 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 Convert a String to an Array
- 1. Paste the string to split. Enter the text you want turned into an array into the input pane, whether it is a single word, a sentence, or a multi-line block.
- 2. Choose Split into and Array format. Pick Characters, Words, or Lines under Split into to decide how the string is divided, then choose JSON, JavaScript or Python under Array format to match the syntax you need.
- 3. Copy the array literal. Copy the generated array and paste it directly into your source file, config, or notebook cell where a literal array of that language is expected.
When to use Convert a String to an Array
Convert a String to an Array builds a ready-to-paste array from a string's characters, words, or lines, in JSON, JavaScript, or Python syntax. It saves the manual work of quoting and comma-separating each element by hand.
- Turning a word list into a JSON array. You have a plain list of words, one per line, copied from a spreadsheet or document, and need them as a properly quoted JSON array for an API request body.
- Building a Python list for a test fixture. You need a Python list literal of test strings for a unit test's parametrize decorator, and typing the quotes and commas by hand for a dozen entries is tedious.
- Splitting a sentence into individual characters. You are demonstrating string indexing or building a character-frequency example and need each character of a word split out as separate array elements in JavaScript.
- Converting pasted lines into a JS constant. You copied a list of allowed values from documentation and want them formatted as a JavaScript array literal ready to paste into a constants file.
Examples
Characters as a JSON array
Input
abc
Output
["a", "b", "c"]
About the Convert a String to an Array tool
Convert a String to an Array does its work locally, right in the browser. Build a JSON, JavaScript, or Python array from a string's parts. 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 2 settings, including Split into and Array format, and the result refreshes the moment you change one. 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 Convert a String to an Array 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.