Matrix Calculator
Multiply matrices, take determinants and inverses, and transpose — all in the browser, powered by a real linear-algebra engine.
Matrix CalculatorLive
linear algebra · multiply, det, inverse, solve
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Controls
Enter matrices (rows on new lines, values space-separated), then pick an operation.
Data Inspector
EngineGauss-Jordan
Result—
Governing equation
Reading this result: A is square with det(A) = 5 ≠ 0, so it is invertible; |det| is the factor by which the map scales area/volume.
Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.
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How it works
Operations run on PolySim's linear-algebra core: matrix multiplication, addition, transpose, determinant via LU decomposition, and inverse via Gauss-Jordan elimination with partial pivoting. Enter matrices as rows of space-separated numbers and pick an operation.
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Frequently asked questions
Is this matrix calculator tool really free?▾
Yes. Matrix Calculator runs entirely in your browser using your device's own compute, so local use is free forever. You only pay Compute Tokens if you scale a job to the cloud.
Do I need to install anything?▾
No. Everything runs client-side in a modern browser — no downloads, no license, no account required to start.
Can I save or share my simulation?▾
Create a free account to save projects, and use a shareable embed or minted DOI to publish a live, interactive version anywhere.
How accurate are the results?▾
The solver uses established numerical methods, but results are for research and educational purposes and should be validated against experiment or professional review before you rely on them.