Matrix calculator

How it works

Exact answers in fractions, with the working shown step by step. Copy anything as LaTeX for your report.

Type whole numbers, decimals or fractions like 1/3. Arrow keys move between boxes. Paste works with MATLAB style [1 2; 3 4] or Excel cells.

💾 Worked out in your browser with exact fractions, so there's no rounding error.

How it works & questions

How it works

  1. 1

    Enter your matrices

    Type them in, or paste from MATLAB or Excel. Combine up to six matrices A–F.

  2. 2

    Pick an operation

    Determinant, inverse, RREF, rank, eigenvalues, LU, solving Ax = b and more.

  3. 3

    Follow the working

    Every step is shown in exact fractions. Copy anything as LaTeX for your report.

Questions

Are the answers exact?

Yes. It works in fractions, not decimals, so there are no rounding errors.

Does it show the working?

Yes, step by step, including row operations and cofactor expansion along any row or column.

Can I use the result in my report?

Yes. Copy the answer or the working as LaTeX.

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