3×3 Inverse Matrix Calculator
Compute the inverse of a 3×3 matrix from its adjugate and determinant. If the determinant is 0, the matrix has no inverse.
Input
Enter a 3×3 matrix. Each line is one row; separate values with spaces or commas.
Result
Determinant det(A)
1
Invertible
Invertible
Inverse A⁻¹
| -24 | 18 | 5 |
| 20 | -15 | -4 |
| -5 | 4 | 1 |
How it works
- The inverse is found from the adjugate (transpose of the cofactor matrix) divided by the determinant: A⁻¹ = adj(A)/det(A).
- When det(A) = 0 the matrix is singular and no inverse exists.
- Each input line is one matrix row; separate entries with spaces or commas. Enter exactly 3 rows and 3 columns.
- Results use floating-point arithmetic, so tiny rounding errors may appear.
Reviews
Tell us what you think of this calculator.
Write a review
- Home
3×3 Inverse Matrix Calculator