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Matrix Calculator

Add, multiply and transpose matrices with automatic shape checking.

Work with matrices

Shapes: —
One row per line, values separated by spaces or commas.

How to use the Matrix Calculator

  1. Type matrix A with one row per line.
  2. Type matrix B the same way when the operation needs it.
  3. Choose the operation and press Calculate to see the result.

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Frequently Asked Questions

Common questions about the free online matrix calculator.

Type matrix A and matrix B with one row per line, choose A x B and press Calculate. The shapes are checked before multiplying.
Write one row per line and separate the values with spaces or commas, so a two by two matrix is simply 1 2 on one line.
The number of columns in A must equal the number of rows in B. The tool refuses the operation and explains why otherwise.
Addition works only when both matrices have exactly the same number of rows and columns, and each pair of entries is added.
It flips the matrix over its diagonal so rows become columns. A three by two matrix therefore becomes two by three.
No. A times B and B times A are usually different, and one of them may not even be defined for a given pair of shapes.
Any size you like, as long as the matrix fits comfortably in the text areas and the shapes are compatible.
No. All matrix arithmetic runs in your browser, so your values never leave your device.

Last updated: October 10, 2026