Formula and calculation method
Addition and subtraction combine matching entries. Multiplication: Cᵢⱼ = Σ AᵢₖBₖⱼ.
Use consistent units for all comparable inputs. The displayed result is rounded; arithmetic is performed with the full available numeric precision. Check your source measurements before relying on the result.
How to use matrix calculator
- Set Matrix A (rows separated by semicolons). The example below uses 1,2;3,4.
- Set Matrix B (rows separated by semicolons). The example below uses 5,6;7,8.
- Set Operation by choosing the option that matches your calculation.
- Select Calculate to update the result. Reset restores the illustrated inputs. Copy, print or download your own result if you need a record.
Worked example
Example inputs
- Matrix A (rows separated by semicolons)
- 1,2;3,4
- Matrix B (rows separated by semicolons)
- 5,6;7,8
- Operation
- Add
- Result matrix
- 6, 8; 10, 12
Factors affecting your result
Use consistent units for all comparable inputs. The displayed result is rounded; arithmetic is performed with the full available numeric precision. Check your source measurements before relying on the result.
Changing matrix a (rows separated by semicolons) changes the scenario being evaluated. Adjust one input at a time when comparing results, keep a copy of the assumptions, and compare values using the same unit and period. A precise arithmetic result does not make an uncertain assumption precise.
Frequently asked questions
How does the matrix calculator work?
Addition and subtraction combine matching entries. Multiplication: Cᵢⱼ = Σ AᵢₖBₖⱼ.
What inputs does Matrix Calculator need?
Enter matrix a (rows separated by semicolons), matrix b (rows separated by semicolons), operation. Choose values that correspond to the same situation and measurement convention.
How should I interpret the matrix calculator result?
Use consistent units for all comparable inputs. The displayed result is rounded; arithmetic is performed with the full available numeric precision. Check your source measurements before relying on the result.
Are my matrix calculator inputs uploaded?
No. The calculation runs in this browser. Favorites, recent tool names, theme and formatting preferences may be saved locally, but calculation inputs are not sent to a calculation server or stored by this website. Shared links do not include entered values.
Maintained by Calculators.buzz Editorial Team. Implementation date: . No professional credentials or clinical review are claimed. Read our methodology policy.