In mathematics, matrix multiplication or matrix product is a binary operation that produces a matrix from two matrices with entries in a field. The matrix product is designed for representing the composition of linear maps that are represented by matrices. When you multiply a matrix of 'm' x 'k' by 'k' x 'n' size you'll get a new one of 'm' x 'n' dimension. Number of columns of the 1st matrix must equal to the number of rows of the 2nd one. Our calculator can operate with fractional numbers as well. With flexible matrix creation and easy fill operations this is simply one of the best matrix multiplication calculator you can find online!