About the Matrix Calculator
A free tool for the core matrix operations used in linear algebra.
What it is
This calculator performs addition, subtraction, and multiplication on 2ร2 or 3ร3 matrices, and finds the determinant and inverse of a single matrix using cofactor expansion. Singular matrices (determinant of zero) are correctly flagged as having no inverse.
Features
2ร2 and 3ร3 support
Switch sizes with one click.
Five operations
Add, subtract, multiply, determinant, and inverse.
Singular matrix handling
Clear error when a matrix has no inverse.
Instant, private
Runs entirely in your browser. No data is sent anywhere.