- Convert between Helmholtz pitch notation and Scientific pitch notation and other formats instantly.
- Other formats include:
- Frequency (Hz): the pitch or frequency of the note in Hz (Hertz). Assumes A4 = 440 Hz (also known as A440, A4, or the Stuttgart pitch).
- Guitar Pro: scientific pitch notation used in Guitar Pro that is noted an octave higher (i.e. sounds an octave lower).
- Yamaha, Encore: scientific pitch notation used in some Japanese literature, Yamaha manuals and Encore, that is noted an octave lower (i.e. sounds an octave higher).