Is this matrix calculator free?

Yes, completely free with no signup and no usage limits.

Does my data leave my device?

No. All matrix operations run locally in your browser.

Yes. The layout adjusts for mobile screens and works on iPhone and Android.

Matrix Calculator

Add, subtract, multiply matrices and compute determinant and inverse — for 2×2 and 3×3 matrices.

100% client-side · no upload

Matrix size:

Matrix A

Matrix B

Choose 2×2 or 3×3 matrix size, then fill in the values for matrices A and B.
Click an operation button: A + B, A − B, A × B, det(A), or A⁻¹.
The result appears instantly. For the inverse, an error is shown if the matrix is singular (det = 0).

Is this matrix calculator free?: Yes, completely free with no signup and no usage limits.
Does my data leave my device?: No. All matrix operations run locally in your browser.
Does it work on mobile?: Yes. The layout adjusts for mobile screens and works on iPhone and Android.