Find the nearest MIDI note and tuning cents for any frequency.
Inverting the note-to-frequency formula gives a continuous note position, which rounds to the nearest MIDI number. Tuning instruments and identifying recorded pitches requires knowing both the closest note and how far off it is in cents.
Frequency to MIDI Note
MIDI = 69 + 12 x log2(freq / 440); cents = slight difference x 100
MIDI = 69 + 12 x log2(freq / 440); cents = slight difference x 100 Inverting the note-to-frequency formula gives a continuous note position, which rounds to the nearest MIDI number.
Tuning instruments and identifying recorded pitches requires knowing both the closest note and how far off it is in cents.
This calculator takes 2 inputs: Frequency, A4 tuning. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.