Free Matrix Multiplication & Determinant Calculator (2x2, 3x3, 4x4) Online
Multiply matrices, find determinants (det A), matrix inverses (A⁻¹), transposes, and solve systems of linear equations. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Select Matrix Dimensions
Choose 2×2, 3×3, 4×4, or custom m×n dimensions.
Fill Matrix Elements
Input numbers into Matrix A and Matrix B grids.
Execute Operation
Multiply (A × B), Add (A + B), or compute Determinant |A|.
Review Step Breakdown
Inspect row-by-column dot product summation steps.
Frequently Asked Questions
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