MIDI Note ↔ Frequency

Convert between MIDI note numbers, note names, and Hz. Useful for synth patches, tuner reference, and drone layers.

Converter

MIDI note (0–127)

Note name

Frequency (Hz)

MIDI 69 · 440.00 Hz · concert pitch

E2 (bass low) A2 (bass open A) E3 (guitar low E) E4 (guitar 1st) A4 (concert 440) B1 (drop B bass) G2 (drop G guitar) E1 (8-string low)

Full MIDI note reference (0–127)

Highlighted row = currently selected note.

#	Note	Hz	Context