Reformat a Matrix
Convert between formats. Runs entirely in your browser, so your data never leaves your device.
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Output
The result appears here as you type.
How to use Reformat a Matrix
- 1. Paste your matrix. Enter the matrix as rows on separate lines with values separated by spaces. Any shape works since the conversion applies to whatever grid you provide.
- 2. Choose the output format. Pick Spaces, Commas, JSON, MATLAB, or LaTeX from Output format, depending on whether the matrix is headed into a document, a script, or a paper.
- 3. Copy the converted matrix. The output pane shows the matrix rewritten in your chosen notation. Copy it directly into your code, LaTeX source, or MATLAB session.
When to use Reformat a Matrix
Reformat a Matrix converts a matrix between plain-text notations: space-separated rows, comma-separated values, JSON nested arrays, MATLAB syntax, or LaTeX matrix markup. Use it whenever a matrix needs to move from one tool's expected format to another's.
- Pasting a matrix into LaTeX. You worked out a matrix by hand or copied it from a spreadsheet and need it as LaTeX markup for a paper or homework writeup, ready to paste inside a bmatrix environment.
- Converting a matrix into JSON for an API. You have a matrix written as plain rows and need it as a nested JSON array to paste into a request body or configuration file for a service that expects that structure.
- Moving a matrix into MATLAB syntax. You are porting a small linear algebra example from a textbook or another tool into a MATLAB script and need the matrix written in MATLAB's semicolon-separated row syntax.
- Standardizing separators before importing to a spreadsheet. A matrix uses inconsistent spacing and you need it as clean comma-separated values before pasting it into a spreadsheet cell that expects a specific delimiter.
Examples
Matrix to JSON
Input
1 2 3 4
Output
[[1,2],[3,4]]
Matrix to LaTeX
Input
1 2 3 4
Output
\begin{bmatrix} 1 & 2 \\ 3 & 4 \end{bmatrix}About the Reformat a Matrix tool
Reformat a Matrix is a free online tool that works entirely inside your web browser. Convert between formats. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 234 Math utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with the Output format setting, and the result refreshes the moment you change it. 2 worked examples further down the page show exactly what the tool produces for real inputs.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Is Reformat a Matrix free to use?
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?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
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?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
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.