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Adjugate matrix calculator

Find the transposed cofactor matrix of a square matrix.

How to use this calculator

Edit the matrix after AdjugateMatrix. For diag(2,4), the adjugate is diag(4,2).

Tap the math below to edit it and see the result. Once a result is ready, press Tab on a hardware keyboard to accept it. Outside a matrix, Return completes the line; the phone math keyboard has the same Return action.

Try it here

AdjugateMatrix⁡([2004])\operatorname{AdjugateMatrix}\left(\begin{bmatrix}2&0\\0&4\end{bmatrix}\right)

Interactive tools require JavaScript. You can read the guide and example without it.

What to know

The adjugate exists for singular square matrices even when an inverse does not.

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