Matrix Multiplication Calculator

Multiply two matrices (A × B) when A’s columns match B’s rows, with the result size shown.

One row per line; separate entries with spaces or commas.
Decimals, fractions and negatives work.
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Result
Result (rows separated by |)
Size
Note
Work

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Matrix Multiplication

Type each row on its own line, with entries separated by spaces or commas.

(AB)ᵢⱼ = Σₖ Aᵢₖ Bₖⱼ (columns of A = rows of B)

Worked Example

Tips

Results are rounded to 6 significant figures for display. Matrices up to about 10×10 work comfortably.