Matrix Calculator

  • 3×3 Matrix Eigenvalue Calculator
    Find the eigenvalues of any 3×3 matrix instantly. Solves the characteristic cubic det(A−λI)=0 with Cardano's method and lists λ₁, λ₂, λ₃.
  • 3x3 Matrix Inverse Calculator
    Compute the inverse of any 3x3 matrix online. Enter nine real numbers and get A^-1 plus the determinant, with singular-matrix detection.
  • 3×3 Matrix Multiplication Calculator
    Multiply two 3×3 matrices instantly. Enter all 18 entries to get the product matrix C = A × B using the row-by-column dot-product rule.
  • 4×4 Matrix Determinant Calculator
    Compute the determinant of any 4×4 matrix instantly using cofactor (Laplace) expansion. Enter all 16 entries and get det(A) with full precision.
  • Dot Product Calculator
    Calculate the dot product (scalar product) of two 2D or 3D vectors. Also returns each vector's magnitude and the angle between them.

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