Piano note
D7 Piano Note Frequency
D7 is key 78 of the 88 on a standard piano, with a frequency of 2349.32 Hz when the piano is tuned to A4 = 440 Hz.
2349.32 Hz
D7 at a glance
- Frequency (A4 = 440 Hz)
- 2349.32 Hz
- At A4 = 442 Hz
- 2360.00 Hz
- At A4 = 432 Hz
- 2306.60 Hz
- Piano key number
- 78 / 88
- MIDI note number
- 98
- Octave
- 7
- Key colour
- White key
- Wavelength in air
- 14.6 cm
- Period (one vibration)
- 0.426 ms
- Register
- High treble
Wavelength assumes sound travels at 343 m/s (air at about 20 °C).
About this part of the keyboard
At the top of the keyboard the notes still have three short steel strings, but on most pianos the highest keys have no dampers, because the strings die away quickly on their own. The tone is short and bright, and tuners stretch these notes noticeably sharp of the theoretical frequency.
Neighbouring keys
Is your D7 in tune?
Play D7 on your piano and our free online tuner will show how many cents it is from 2349.32 Hz.
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