Matrix calculator
Add, subtract, multiply, invert, and take determinants of 2×2 and 3×3 matrices, plus scalar multiply and transpose.
How to use
- Choose the operation and size.
- Fill in matrix A (and B or a scalar when needed).
- Read the result matrix or number.
What it supports
2×2 and 3×3 real matrices; each entry must be within ±1e12. Inverse fails with a clear error when the determinant is 0. Results are rounded to 4 decimal places.