All Tools VerseMatrix Multiplication Calculator
Multiply two matrices, where the columns of A must equal the rows of B.
- Runs in your browser
- Nothing uploaded
- Free, no sign-up
Calculated locally in your browser. Your matrices never leave this tab.
How to Use Matrix Multiplication Calculator
- Enter Matrix A. One row per line, values separated by spaces.
- Enter Matrix B. Its rows must match A's columns.
- Multiply. The matrix product is calculated.
- Copy the result. Click Copy result. It all runs in your browser.
Frequently Asked Questions
What sizes can I multiply?
The number of columns in Matrix A must equal the number of rows in Matrix B, which is the rule for matrix multiplication.
What size is the result?
It has the rows of A and the columns of B.
Is the order important?
Yes. Matrix multiplication is not commutative, so A times B is generally different from B times A.
Is anything uploaded?
No. The calculation runs in your browser, so your matrices never leave the tab.
Is it free?
Yes. Every tool here is free to use with no sign up.
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