A♭7 at every common reference pitch
A note’s frequency depends on what A4 is tuned to. The standard is 440 Hz; the other three are the ones you are most likely to meet. The cents column is how far each one sits from the 440 version — the same for every note, because changing the reference moves the whole scale together.
| Reference | A♭7 | vs 440 |
|---|---|---|
| A4 = 415 Hz · Baroque pitch | 3133.7 Hz | −101.3¢ |
| A4 = 432 Hz · “Verdi” pitch | 3262.0 Hz | −31.8¢ |
| A4 = 440 Hz · Standard (ISO 16) | 3322.4 Hz | — |
| A4 = 442 Hz · Orchestral | 3337.5 Hz | +7.9¢ |
One cycle of A♭7 lasts 301.0 µs, and its wavelength in air at 20 °C is 10.3 cm. Hold it as a steady tone in the tone generator.
A♭7 on the piano
A♭7 is key 84 of 88, counting from the bottom — the black key between G and A. Press any key below to compare it with its neighbours.
A♭7 on the guitar
A♭7 is above the highest fret of any standard guitar, so a guitar in standard tuning cannot play it.
A♭7 on the staff
Instruments that can play A♭7
5 instruments play A♭7 within the normal range, and 1 reach it only at the extreme of theirs. Each links to its range chart; for a transposing instrument, the note on its part is shown.
Bowed strings
Woodwind
Tuned percussion
Keyboards and free reeds
Only at the extreme of their range
A♭7 is outside the typical range of all six voice types. Test your own range.
The harmonics of A♭7
A played A♭7 is not one frequency. A string or a pipe also sounds whole-number multiples of it, and the mix of those harmonics is the instrument’s tone. Here is where the first eight land — and why the 7th sounds out of tune against a piano.
| Harmonic | Frequency | Nearest note | Off by |
|---|---|---|---|
| 1 (fundamental) | 3322.4 Hz | A♭7 | 0¢ |
| 2 | 6644.9 Hz | A♭8 | 0¢ |
| 3 | 9967.3 Hz | E♭9 | +2.0¢ |
| 4 | 13,290 Hz | A♭9 | 0¢ |
| 5 | 16,612 Hz | C10 | −13.7¢ |
| 6 | 19,935 Hz | E♭10 | +2.0¢ |
| 7 | 23,257 Hz | F♯10 | −31.2¢ |
| 8 | 26,580 Hz | A♭10 | 0¢ |
Frequently asked questions
What is the frequency of A♭7?
A♭7 is 3322.4 Hz in equal temperament with A4 tuned to 440 Hz, the international standard. At A4 = 432 Hz it is 3262.0 Hz, and at the orchestral A4 = 442 Hz it is 3337.5 Hz.
Is A♭7 the same note as G♯7?
On a piano, a guitar or a tuner, yes: A♭7 and G♯7 are the same key and the same frequency, 3322.4 Hz, in equal temperament. They are two names for one pitch (enharmonic equivalents). Which one is written depends on the key — sharps in sharp keys, flats in flat keys — and a string or wind player may pitch them a few cents apart when playing in just intonation.
How do I play A♭7 on a piano?
A♭7 is key 84 of 88, counting from the bottom — the black key between G and A.
Which instruments can play A♭7?
5 of the instruments we chart play A♭7 within their normal range, including erhu, piccolo, xylophone, glockenspiel, piano, and 1 more reach it only at the extreme of their range.
Typing it? A♭7 is also written Ab7 or G#7. Convert any frequency on the Hz-to-note converter.