E7 — 2637.020 Hz
E7 (E7) is 2637.020 Hz in standard equal temperament at A=440 Hz. It is MIDI note number 100.
E7 Frequency in All Tuning Systems
| Temperament | Frequency (Hz) | Cents from Equal | Common Usage |
|---|---|---|---|
| Equal Temperament | 2637.020 Hz | 0.00 | Modern standard; piano, fretted instruments |
| Pythagorean Tuning | 2640.008 Hz | +1.96 | Medieval/early music; string ensemble open fifths |
| Just / Pure | 2616.256 Hz | -13.69 | A cappella vocal, barbershop, Renaissance |
| Meantone 1/3 Comma | 2631.816 Hz | -3.42 | Renaissance vocal music in minor keys |
| Meantone 1/4 Comma | 2631.816 Hz | -3.42 | Renaissance keyboard, early Baroque organ |
| 1/6 SC - Attenuated | 2631.816 Hz | -3.42 | Baroque orchestral ensemble compromise |
| Kellner's Bach | 2632.257 Hz | -3.13 | Bach keyboard reconstruction |
| Kirnberger III | 2631.816 Hz | -3.42 | Classical-era keyboard, keys near C major |
| Vallotti | 2634.037 Hz | -1.96 | Baroque/Classical orchestral tuning |
| Werckmeister III | 2634.037 Hz | -1.96 | Baroque keyboard; Bach contemporaries |
| Werckmeister IV | 2631.071 Hz | -3.91 | Baroque keyboard, strong key contrast |
| Werckmeister V | 2634.037 Hz | -1.96 | Specialized Baroque keyboard |
Positive cents = sharper than equal temperament. Negative cents = flatter. 100 cents = 1 semitone.
E7 at Different Concert Pitches
The same note varies in frequency depending on the concert pitch standard used by your ensemble.
| Concert Pitch | Frequency (Hz) | Common Usage |
|---|---|---|
| A = 440 Hz (ISO standard) | 2637.020 Hz | US, UK, and most modern ensembles worldwide |
| A = 442 Hz | 2649.007 Hz | Many European orchestras; France, Germany |
| A = 443 Hz | 2655.000 Hz | Berlin Philharmonic; some US orchestras |
| A = 432 Hz | 2589.075 Hz | Alternative tuning; Baroque revival |
| A = 415 Hz (Baroque) | 2487.190 Hz | Historically-informed Baroque performance |
f = f_at_A440 × (concert_pitch / 440)
Instruments That Play E7
E7 (2637.020 Hz) falls within the comfortable playing range of 3 instruments.
Why E7 Varies Across Tuning Systems
E7 shows a maximum deviation of -13.69 cents in Just / Pure compared to equal temperament. This 14-cent difference reflects how different tuning philosophies prioritize interval purity over equal distribution.
In Just / Pure, E7 is tuned flatter than equal temperament, reflecting this system's approach to distributing the Pythagorean comma across the chromatic scale.
E7 Across All Tuning Systems
Explore how E7 is tuned in each historical temperament system. Each tuning system gives E7 a slightly different frequency, affecting the harmonic character of chords and melodies.
E7 in Historical Temperament Systems
Explore how E7 (2637.020 Hz in equal temperament) is tuned in each of the 15 historical non-equal temperament systems. Each system places E7 at a slightly different frequency based on its mathematical basis.
Tune E7 with precision — Get Tunable.
Tunable supports 15+ tuning systems including equal temperament, Pythagorean, just intonation, and historical well-temperaments. See exact Hz values in real-time as you play.
