D3 frequency
In standard tuning (A4 = 440 Hz), D3 is 146.83 Hz. It's MIDI note 50 and key 30 of 88 on a piano.
| Frequency | 146.83 Hz |
| Period | 6.810 ms |
| Wavelength in air | 2.34 m |
| One octave down | D2 · 73.42 Hz |
| One octave up | D4 · 293.66 Hz |
| At A4 = 432 Hz | 144.16 Hz |
D3 is within the usual range of piano, guitar, bass guitar, viola, cello, a bass voice and a tenor voice.
See every note on the note frequency chart, or train your ear to recognise notes like this one in the course.
Questions
What is the frequency of D3?
146.83 Hz in standard tuning, where A4 is 440 Hz.
What is D3 at 432 Hz tuning?
If A4 is tuned to 432 Hz, D3 becomes 144.16 Hz.
Which octave is D3 in?
Octave 3. Octaves are numbered from C, so D3 sits below middle C (C4).
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