# Determinant of a 2 by 2 Matrix - Calculator

An online calculator that calculates the determinant of a 2 by 2 matrix.

Let A be a 2 by 2 matrix given by

A = [[a , b] , [c , d]]

where [a , b] is the first row and [c , d] is the second row of the given matrix.

The determinant of matrix A is given by

det(A) = a × d - c × b

__How to Use the Calculator__

1 - Enter coefficients a, b, c and d press "enter".
### More References and links

Calculate Determinant of a Matrix

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