Calculators

How to Use the Matrix Calculator

2026-11-134 min readBy Apex Tool Station Team

Calculate the determinant, inverse and transpose of a matrix, and add, subtract or multiply two matrices.

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1. What is the Matrix Calculator?

A quick linear-algebra helper for students and engineers. Type matrices with one row per line, then compute the determinant, inverse (Gauss-Jordan elimination), transpose, sum, difference or product. Works with any size, including 2×2, 3×3 and 4×4.

2. How to use the Matrix Calculator

Here is the whole process, step by step. It takes less than a minute from opening the tool to seeing your result.

1Fill in the Matrix A (rows on new lines, values separated by spaces), Matrix B (for A+B, A−B, A×B) fields.
2Your result updates as you type — read it below the fields, with its breakdown where shown.

Press the "det(A)" button and your result appears on the page.

Everything runs in your browser — your files and text never leave your device.

3. What you can do with it

Run the tool with the "det(A)" button when your input is ready.

4. Tips for best results

Your text never leaves your device — The tool runs entirely in your browser using JavaScript. Nothing is uploaded, so you can paste private documents without worry. That also means there is no account to create and no file to upload.
It works on your phone too — Open the tool in any modern browser on Android or iPhone. The layout adjusts to the screen and everything works the same way on a small screen as on a desktop.
Read the breakdown, not just the headline number — The result updates as you type. The breakdown underneath shows how the number was worked out, which is where mistakes usually show up.