Matrix Determinant
The determinant is a single number that captures key properties of a square matrix, including whether it is invertible. Enter the matrix with rows separated by semicolons and entries by commas; the calculator returns the determinant.
Frequently asked questions
How do I enter a matrix?
Separate rows with a semicolon and entries with a comma, for example "1,2;3,4" for a 2×2 matrix.
What does a determinant of 0 mean?
A zero determinant means the matrix is singular: its rows are linearly dependent and it has no inverse.
Does this work for matrices larger than 3×3?
Yes. The calculator uses cofactor expansion, which works for any square matrix.