United States calculator
Build a complete twelve-tone row matrix
Enter one valid twelve-tone prime row to generate its complete 12×12 matrix, inversion, retrograde and retrograde-inversion forms.
Prime • inversion • retrograde
Calculator inputs
12-Tone Matrix Calculator results
How this 12-Tone Matrix Calculator works
The first row is treated as P0. Every matrix entry is calculated modulo 12 from the prime row, so every row and column remains a complete chromatic aggregate.
Important: This is a pitch-class calculation tool. Musical spelling, register, rhythm and compositional interpretation remain the user’s decisions.
What assumptions should I verify?
Verify every entered quantity, rate, unit, product specification and local requirement before relying on the estimate. U.S. conventions are primary where location matters.
Is information sent anywhere?
No. Calculations run locally in the browser and this calculator sends no entered information to a remote service.