3x3 Determinant Calculator

Matrix Determinant

Find the determinant of a 3x3 matrix from its nine entries.

Method: The calculator expands along the first row using the standard 3x3 determinant formula.

Understanding 3x3 Determinants

1. What This Calculator Measures

A 3x3 determinant is a single value that describes scaling, orientation, and whether a three-variable matrix is invertible.

2. How the Calculation Works

The calculator expands the determinant across the first row, finding three 2x2 minor determinants and combining them with alternating signs.

3. Formula or Rule Used

det(A) = a(ei - fh) - b(di - fg) + c(dh - eg).

Explore Our Calculators

Math Calculators

Finance Calculators

Health Calculators

Science & Engineering Calculators

Unit Converters

Date & Time Calculators

Business & Tax Calculators

Other Calculators

Explore Programming Tools

Programming Tools

Explore our interactive programming environments for learning, testing, and executing code directly in your browser. Perfect for students, professionals, and enthusiasts.