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Piano note

D7 2349.32 Hz

D7 is piano key 78 of 88, MIDI 98, at 2349.32 Hz. It sits in the top octave of the piano, used for sparkle and doubling.

  • Key 78 of 88
  • MIDI 98
  • +29 semitones from A4

D7

Frequency, piano key and harmonics

D7 is piano key 78 of 88, MIDI 98, at 2349.32 Hz. It sits in the top octave of the piano, used for sparkle and doubling.

Frequency2349.32 HzA4 = 440
MIDI98
Piano key78 of 88
From A4+29 st
Period0.426 ms
Wavelength14.6 cm343 m/s
HarmonicFrequencyNearest equal-tempered note
1 · fundamental2349.32 HzD7 (+0 ¢)
2×4698.64 HzD8 (+0 ¢)
3×7047.95 HzA8 (+2 ¢)
4×9397.27 HzD9 (+0 ¢)
5×11746.59 HzF♯9 (−14 ¢)
6×14095.91 HzA9 (+2 ¢)

Piano playback uses the nearest piano sample, played faster or slower, plus a sine wave at the exact pitch. The sine button is the exact equal-tempered frequency. Neighbors: C♯7 and D♯7. Arbitrary pitches and alternate A4 tunings belong on the calculator.

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Hear the note. Then name the interval.

Interval and chord drills in the app are built on this same piano and this same tuning.

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Explore the cluster

C♯7 One semitone down. Lower neighbor → D♯7 One semitone up. Upper neighbor → Note calculator Retune A4 or type any frequency. Open calculator →

FAQ

D7 questions

What frequency is D7?

2349.32 Hz when A4 is 440 Hz. Change the reference on the note calculator if you need another tuning. This page does not change.

What MIDI note is D7?

MIDI 98. Piano key 78, counting A0 as key 1 and C8 as key 88.

How loud should I listen?

Keep the tone at a conversation level. These pages can generate steady tones and noise, which fatigue your ears faster than music. If anything rings or feels uncomfortable, stop and turn the volume down.