🔲Matrix Calculator
Add, subtract, multiply matrices, or find the determinant and inverse — for 2×2 or 3×3 matrices.
Matrix A
Matrix B
Free Matrix Calculator
This matrix calculator handles the core operations for 2×2 and 3×3 matrices: addition, subtraction, multiplication, determinant, and inverse. Addition and subtraction combine matrices element by element; multiplication follows the row-by-column dot product rule; the determinant and inverse use cofactor expansion.
Matrices with a determinant of zero are singular and have no inverse — the calculator flags this rather than dividing by zero. Enter your values directly into the grid and every result updates instantly.
Useful for linear algebra coursework, systems of equations, and transformations. Free, runs entirely in your browser.