Audio Frequency Calculator

Calculate audio frequency by note and octave

Frequency440.000 Hz
Period2.273 ms
Wavelength (air at 20Β°C)0.780 m
MIDI69

ℹ️ Uses 12-tone equal temperament: f = A4 Γ— 2^((MIDIβˆ’69)/12). Wavelength assumes 343m/s and changes with temperature.

ℹ️ Audio Frequency Calculator

Calculate audio frequency by note and octave

Verify results with an authoritative source before using them for important medical, legal, or financial decisions.

Audio Frequency Calculator - GetUtilBox