F4 — 349.228 Hz
F4 (F4) is 349.228 Hz in standard equal temperament at A=440 Hz. It is MIDI note number 65.
F4 Frequency in All Tuning Systems
| Temperament | Frequency (Hz) | Cents from Equal | Common Usage |
|---|---|---|---|
| Equal Temperament | 349.228 Hz | 0.00 | Modern standard; piano, fretted instruments |
| Pythagorean Tuning | 347.654 Hz | -7.82 | Medieval/early music; string ensemble open fifths |
| Just / Pure | 348.834 Hz | -1.95 | A cappella vocal, barbershop, Renaissance |
| Meantone 1/3 Comma | 353.062 Hz | +18.90 | Renaissance vocal music in minor keys |
| Meantone 1/4 Comma | 352.001 Hz | +13.69 | Renaissance keyboard, early Baroque organ |
| 1/6 SC - Attenuated | 351.008 Hz | +8.80 | Baroque orchestral ensemble compromise |
| Kellner's Bach | 351.523 Hz | +11.34 | Bach keyboard reconstruction |
| Kirnberger III | 352.001 Hz | +13.69 | Classical-era keyboard, keys near C major |
| Vallotti | 350.809 Hz | +7.82 | Baroque/Classical orchestral tuning |
| Werckmeister III | 351.207 Hz | +9.78 | Baroque keyboard; Bach contemporaries |
| Werckmeister IV | 351.207 Hz | +9.78 | Baroque keyboard, strong key contrast |
| Werckmeister V | 350.018 Hz | +3.91 | Specialized Baroque keyboard |
Positive cents = sharper than equal temperament. Negative cents = flatter. 100 cents = 1 semitone.
F4 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) | 349.228 Hz | US, UK, and most modern ensembles worldwide |
| A = 442 Hz | 350.816 Hz | Many European orchestras; France, Germany |
| A = 443 Hz | 351.609 Hz | Berlin Philharmonic; some US orchestras |
| A = 432 Hz | 342.879 Hz | Alternative tuning; Baroque revival |
| A = 415 Hz (Baroque) | 329.386 Hz | Historically-informed Baroque performance |
f = f_at_A440 × (concert_pitch / 440)
Instruments That Play F4
F4 (349.228 Hz) falls within the comfortable playing range of 53 instruments.
Why F4 Varies Across Tuning Systems
F4 shows a maximum deviation of +18.90 cents in Meantone 1/3 Comma compared to equal temperament. This 19-cent difference is clearly audible to trained musicians and reflects how different tuning philosophies prioritize interval purity over equal distribution.
In Meantone 1/3 Comma, F4 is tuned sharper than equal temperament to achieve purer intervals with nearby notes in the tuning system's favored keys.
4 of the 15 non-equal temperaments deviate by more than 10 cents for F4, making this note one where tuning system choice has a meaningful impact on pitch.
F4 Across All Tuning Systems
Explore how F4 is tuned in each historical temperament system. Each tuning system gives F4 a slightly different frequency, affecting the harmonic character of chords and melodies.
F4 in Historical Temperament Systems
Explore how F4 (349.228 Hz in equal temperament) is tuned in each of the 15 historical non-equal temperament systems. Each system places F4 at a slightly different frequency based on its mathematical basis.
Tune F4 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.
