Matrices / Vectors / Advanced Math
Determinant Calculator: Find the Determinant of Any Matrix Instantly
Calculate the determinant of a 2x2 or 3x3 matrix with cofactor expansion steps shown.
- Sizes
- 2x2 & 3x3
- 2x2 Formula
- ad-bc
- 3x3 Method
- Cofactor
- Free to use
- No sign-up needed
Related calculators
Other free tools for students and parents.
- Matrices / Vectors / Advanced Math2×2 Matrix Multiplication CalculatorUse the matrix multiplication calculator to calculate dot products of linear arrays with step-by-step work.
- Matrices / Vectors / Advanced MathElliptic Curve Point Addition CalculatorDiscover the elliptic curve point addition calculator to compute cryptographic coordinates along algebraic graphs.
- Matrices / Vectors / Advanced MathOrthogonal Vector CalculatorOpen the orthogonal vector calculator to verify if array lines intersect at right angles using dot products.
- Matrices / Vectors / Advanced MathMatrix Addition CalculatorTry the matrix addition calculator to add dimensional arrays together row by row with detailed steps.
This page is a guide from 21K School. Anything it describes — a board rule, a portal link, an eligibility cut-off — can change, so confirm it with the relevant authority before you rely on it.
Ready to help your child find their path?
Speak to a 21K School counsellor about which path fits your family.