Unlock the secrets of pitch with our Note Frequency Calculator. This essential tool helps musicians, audio engineers, and sound designers instantly determine the precise frequency in Hertz (Hz) for any musical note. Whether you're working with MIDI numbers, specific note names, or octave values, get accurate acoustic data for your projects.
Formula:
The frequency (f) of a musical note can be calculated using a reference frequency (typically A4 at 440 Hz) and its semitone distance from that reference. The most common formula for a MIDI note number (M) is:
f = 440 × 2^((M - 69)/12)
f: The resulting frequency in Hertz (Hz).440: The reference frequency in Hz for A4 (the A above middle C).M: The MIDI Note Number (where A4 is MIDI 69).69: The MIDI Note Number for A4.12: The number of semitones in an octave.
This formula accurately translates MIDI notes or standard note/octave combinations into their corresponding absolute frequencies.