E4 — 329.628 Hz
E4 (E4) is 329.628 Hz in standard equal temperament at A=440 Hz. It is MIDI note number 64.
E4 Frequency in All Tuning Systems
| Temperament | Frequency (Hz) | Cents from Equal | Common Usage |
|---|---|---|---|
| Equal Temperament | 329.628 Hz | 0.00 | Modern standard; piano, fretted instruments |
| Pythagorean Tuning | 330.001 Hz | +1.96 | Medieval/early music; string ensemble open fifths |
| Just / Pure | 327.032 Hz | -13.69 | A cappella vocal, barbershop, Renaissance |
| Meantone 1/3 Comma | 328.977 Hz | -3.42 | Renaissance vocal music in minor keys |
| Meantone 1/4 Comma | 328.977 Hz | -3.42 | Renaissance keyboard, early Baroque organ |
| 1/6 SC - Attenuated | 328.977 Hz | -3.42 | Baroque orchestral ensemble compromise |
| Kellner's Bach | 329.032 Hz | -3.13 | Bach keyboard reconstruction |
| Kirnberger III | 328.977 Hz | -3.42 | Classical-era keyboard, keys near C major |
| Vallotti | 329.255 Hz | -1.96 | Baroque/Classical orchestral tuning |
| Werckmeister III | 329.255 Hz | -1.96 | Baroque keyboard; Bach contemporaries |
| Werckmeister IV | 328.884 Hz | -3.91 | Baroque keyboard, strong key contrast |
| Werckmeister V | 329.255 Hz | -1.96 | Specialized Baroque keyboard |
Positive cents = sharper than equal temperament. Negative cents = flatter. 100 cents = 1 semitone.
E4 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) | 329.628 Hz | US, UK, and most modern ensembles worldwide |
| A = 442 Hz | 331.126 Hz | Many European orchestras; France, Germany |
| A = 443 Hz | 331.875 Hz | Berlin Philharmonic; some US orchestras |
| A = 432 Hz | 323.634 Hz | Alternative tuning; Baroque revival |
| A = 415 Hz (Baroque) | 310.899 Hz | Historically-informed Baroque performance |
f = f_at_A440 × (concert_pitch / 440)
Instruments That Play E4
E4 (329.628 Hz) falls within the comfortable playing range of 53 instruments.
Why E4 Varies Across Tuning Systems
E4 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, E4 is tuned flatter than equal temperament, reflecting this system's approach to distributing the Pythagorean comma across the chromatic scale.
E4 Across All Tuning Systems
Explore how E4 is tuned in each historical temperament system. Each tuning system gives E4 a slightly different frequency, affecting the harmonic character of chords and melodies.
E4 in Historical Temperament Systems
Explore how E4 (329.628 Hz in equal temperament) is tuned in each of the 15 historical non-equal temperament systems. Each system places E4 at a slightly different frequency based on its mathematical basis.
Tune E4 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.
