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About the Matrix Calculator
This Matrix Calculator computes matrix addition, multiplication, determinants, and inverses. Enter your matrix values and the tool returns the resulting matrix or number in a clear layout.
Addition works entry by entry, and multiplication follows the standard row-by-column rule, where each result cell is the dot product of one row and one column. Determinants use cofactor expansion along a selected row or column, and the inverse comes from Gauss-Jordan elimination on the augmented matrix. The calculator needs the dimensions of each matrix plus every element as a number. Before requesting an inverse or determinant, confirm the matrix is square, since these operations apply only to square matrices.
- Choose the operation and set the dimensions of each matrix.
- Enter every value into the grid cells.
- Run the calculation and read the result.