Fast checking
Use it to quickly test whether a matrix is singular before spending more time on inverses or solving systems.
Calculate determinants for square matrices fast, with clean working steps that make it easier to check your process and spot singular matrices quickly.
Enter a square matrix to calculate its determinant. For 2×2 and 3×3 matrices, QuickSolve also shows a simple expansion path so the result is easier to trust.
Determinants are a useful companion to row reduction and matrix inverse work, giving you a faster way to check important matrix properties.
Use it to quickly test whether a matrix is singular before spending more time on inverses or solving systems.
Follow the working for smaller matrices so the calculator teaches as well as computes.
Use the inverse calculator next if you want to keep working with the same matrix and check whether it can be inverted.