MIDI note numbers to semitones from A4
Type a value in MIDI to get it in semitones instantly.
371semitones
That's 213,057,823× as high as the top of a piano — nothing on our list beats it. That is about 371 semitones from concert A.
What it means
What does that sound like?
Based on equal temperament with A4 at 440 Hz. Orchestras sometimes tune to 442 or 443, shifting everything slightly.
The math
How to convert MIDI to semitones
Pitch is logarithmic: f = 440 × 2^((note − 69) ÷ 12). Every octave doubles the frequency and holds 12 semitones.
Example: 440 MIDI = 371 semitones.
Every unit
Your pitch in every unit
Tables
MIDI to semitones conversion table
| MIDI | semitones |
|---|---|
| 55 MIDI | -14 semitones |
| 110 MIDI | 41 semitones |
| 220 MIDI | 151 semitones |
| 261.63 MIDI | 192.63 semitones |
| 330 MIDI | 261 semitones |
| 440 MIDI | 371 semitones |
| 523.25 MIDI | 454.25 semitones |
| 660 MIDI | 591 semitones |
| 880 MIDI | 811 semitones |
| 1,760 MIDI | 1,691 semitones |
semitones to MIDI conversion table
| semitones | MIDI |
|---|---|
| 55 semitones | 124 MIDI |
| 110 semitones | 179 MIDI |
| 220 semitones | 289 MIDI |
| 261.63 semitones | 330.63 MIDI |
| 330 semitones | 399 MIDI |
| 440 semitones | 509 MIDI |
| 523.25 semitones | 592.25 MIDI |
| 660 semitones | 729 MIDI |
| 880 semitones | 949 MIDI |
| 1,760 semitones | 1,829 MIDI |
Quick answers
Quick answers
- How many semitones is 1 MIDI?
- 1 MIDI is -68 semitones.
- How many semitones is 10 MIDI?
- 10 MIDI is -59 semitones.
- How many semitones is 440 MIDI?
- 440 MIDI is 371 semitones.
The units
About these units
MIDI note numbers (MIDI)
0 to 127, with 69 as A440 and 60 as middle C. Every synthesiser speaks this.
Semitones from A4 (semitones)
How many half-steps above or below concert A the note sits.
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