Free Matrix Calculator Online
Free Matrix Calculator Online is a free online tool by US AI. Add multiply determinant. It runs completely in your browser — no signup, no download, works on mobile and desktop.
📖 How to use
- Choose 2x2 or 3x3, fill in matrices A and B, pick an operation, then press Calculate to see the result.
- Open the tool with the button above — it loads instantly.
- Your work stays on your device; nothing is uploaded anywhere.
✨ Why use this tool?
US AI's free matrix calculator online is fast, private and 100% free forever. Bookmark this page and share it with anyone who needs it.
❓ Frequently asked questions
What matrix operations are supported?
You can add, subtract, and multiply matrices, and compute determinants, transposes, and inverses for square matrices — all shown step by step.
What is a matrix determinant used for?
The determinant is a single number computed from a square matrix. It tells you whether the matrix is invertible and appears in solving systems of linear equations.
What matrix sizes can I use?
The calculator handles common sizes from 2x2 up to larger matrices, and it checks that your dimensions are valid before each operation.