The most common MIDI label for C4.
MIDI reference
MIDI note chart
A MIDI note chart maps each piano note to a number. Middle C is MIDI 60, A4 is MIDI 69, and a full 88-key piano spans MIDI 21 through 108.
C3D3E3F3G3A3B3C4D4E4F4G4A4B4C5
C#3D#3F#3G#3A#3C#4D#4F#4G#4A#4The 440 Hz tuning reference in standard pitch.
The standard piano range in MIDI numbers.
How MIDI numbers move
Each half step changes the MIDI number by one. Moving from C4 to C sharp 4 goes from 60 to 61.
Why MIDI numbers are useful
MIDI numbers avoid spelling confusion. C sharp and D flat may have different names, but the same key uses one MIDI number.
Use MIDI with piano frequencies
MIDI numbers can be converted to frequencies when a tuning reference such as A4=440 is known.
Common MIDI note landmarks
| Note | MIDI number | Use |
|---|---|---|
| A0 | 21 | Lowest standard piano key |
| C4 | 60 | Middle C |
| A4 | 69 | Standard tuning reference |
| C5 | 72 | One octave above Middle C |
| C8 | 108 | Highest standard piano key |
FAQ
Quick answers
What MIDI note is Middle C?
Middle C is MIDI note 60 in the most common mapping.
What MIDI note is A4?
A4 is MIDI note 69.
What MIDI range is an 88-key piano?
A standard 88-key piano spans MIDI notes 21 through 108.