2793.83Hz
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2.794 kHzFrequency at A4 = 440 Hz
101MIDI note number
81Piano key (of 88)
12.3 cmWavelength in air
About F7
F7 has a frequency of 2.794 kHz in standard tuning, where A4 is fixed at 440 Hz. It is MIDI note 101 and key number 81 on an 88-key piano.
In equal temperament every semitone multiplies the frequency by the twelfth root of two (≈1.05946), so F7 is 32 semitones above A4: f = 440 × 2^((101 − 69) / 12) = 2,793.83 Hz. The number in the name is the octave in scientific pitch notation, which starts each octave on C.
F7 frequency in different tunings
| Tuning reference | F7 frequency |
|---|---|
| A4 = 440 Hz (ISO 16 standard) | 2.794 kHz |
| A4 = 442 Hz (many European orchestras) | 2.807 kHz |
| A4 = 443 Hz (Berlin, Vienna) | 2.813 kHz |
| A4 = 435 Hz (French diapason normal, 1859) | 2.762 kHz |
| A4 = 432 Hz (alternative tuning) | 2.743 kHz |
| A4 = 415 Hz (Baroque pitch) | 2.635 kHz |
| C4 = 256 Hz (scientific pitch) | 2.734 kHz |
Intervals from F7
| Interval | Note | Frequency | Ratio (just) |
|---|---|---|---|
| Minor second | F♯7 | 2.96 kHz | 16:15 |
| Major second | G7 | 3.136 kHz | 9:8 |
| Minor third | G♯7 | 3.322 kHz | 6:5 |
| Major third | A7 | 3.52 kHz | 5:4 |
| Perfect fourth | A♯7 | 3.729 kHz | 4:3 |
| Tritone | B7 | 3.951 kHz | 45:32 |
| Perfect fifth | C8 | 4.186 kHz | 3:2 |
| Minor sixth | C♯8 | 4.435 kHz | 8:5 |
| Major sixth | D8 | 4.699 kHz | 5:3 |
| Minor seventh | D♯8 | 4.978 kHz | 9:5 |
| Major seventh | E8 | 5.274 kHz | 15:8 |
| Octave | F8 | 5.588 kHz | 2:1 |
Instruments and voices that can play F7
Frequently asked questions
What is the frequency of F7?
F7 is 2.794 kHz when A4 = 440 Hz (2.743 kHz if A4 = 432 Hz).
What MIDI number is F7?
F7 is MIDI note number 101.
Is F7 on a piano?
Yes – it is key 81 of 88.