Matrix Calculator (2x2 & 3x3) interactive tool
Enter matrix entries
Determinant & inverse
Determinant
-2.0000
Inverse matrix
-2.00001.0000
1.5000-0.5000
What Is Matrix Calculator (2x2 & 3x3)?
A matrix calculator for 2×2 and 3×3 matrices computes the determinant and inverse (when it exists). It is especially useful when working through linear algebra examples by hand and wanting a quick check.
Determinant and Inverse at a Glance
The determinant tells you if a matrix is invertible and how it scales area or volume. If the determinant is zero, the matrix is singular and has no inverse. This matrix calculator shows both the scalar determinant and the full numeric inverse (when it exists), formatted in a compact grid you can compare against your own calculations.
How To Use the Matrix Calculator (2x2 & 3x3)
- Select 2x2 or 3x3 from the matrix size dropdown.
- Enter each matrix entry in the grid, using decimal or integer values as needed.
- The matrix calculator will compute the determinant of your matrix.
- If the determinant is non-zero, it will also display the full inverse matrix with each entry shown numerically.
- Use the Example button to load a simple invertible matrix, or Reset to clear the grid.