Matrix Calculator
Add, subtract and multiply 2x2 and 3x3 matrices
100% private. Your files and inputs never leave your device — everything runs locally in your browser.
How to Use Matrix Calculator
Add, subtract and multiply 2x2 and 3x3 matrices. No signup, no uploads, no watermarks.
- 1
Enter your numbers in the input fields.
- 2
Choose the calculation options or frequency.
- 3
The result updates instantly as you type.
- 4
Review the breakdown, chart, or schedule, and copy the answer.
Why choose Matrix Calculator?
- No uploads — your files never leave your device.
- Free forever with no signup, no watermarks, and no limits.
- Works on any device with a modern browser — no installs.
- Fast, private, and built for getting the job done in seconds.
Frequently Asked Questions
Can I multiply a 2×2 matrix by a 3×3 matrix?▾
No. Two matrices can be multiplied only when the number of columns of the first equals the number of rows of the second. This calculator multiplies same-sized square matrices.
What does det(A) mean?▾
The determinant is a scalar that summarizes a square matrix. It is zero for singular (non-invertible) matrices, and for 2×2 matrices [[a, b], [c, d]] it equals ad − bc.
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