Matrix Calculator is an online tool for performing a wide range of matrix operations and exploring related linear algebra calculations. Users can enter matrix elements directly, work with square or non-square matrices, and choose operations such as addition, subtraction, multiplication, transposition, inversion, determinant, rank, and exponentiation. The calculator also supports row echelon and diagonal forms, LU and Cholesky decompositions, and solving systems of linear equations, with solution steps available. Additional capabilities include QR decomposition and singular value decomposition.

Inputs may include decimal values, fractions, mathematical expressions, variables, and matrix literals. The site provides controls for displaying decimals and setting the number of fraction digits or significant digits, along with examples to help users get started. It also offers related calculators for systems of equations, determinants, and eigenvalues, plus a link to Wikipedia’s matrices reference. The interface is available in many languages, and the site acknowledges contributors to several translations. Matrix Calculator serves as a practical resource for entering, calculating, and examining matrices.