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 | 347.654 Hz | -7.82 | Medieval/early music; string ensemble open fifths |
| Just Intonation (Major) | 348.834 Hz | -1.95 | A cappella vocal, barbershop, Renaissance |
| Just Intonation (Minor) | 348.834 Hz | -1.95 | Minor-key vocal music, string ensembles |
| Quarter-Comma Meantone | 352.001 Hz | +13.69 | Renaissance keyboard, early Baroque organ |
| Third-Comma Meantone | 353.062 Hz | +18.90 | Renaissance vocal music in minor keys |
| Sixth-Comma Meantone | 351.008 Hz | +8.80 | Baroque orchestral ensemble compromise |
| 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 |
| Kirnberger III | 352.001 Hz | +13.69 | Classical-era keyboard, keys near C major |
| Vallotti | 350.809 Hz | +7.82 | Baroque/Classical orchestral tuning |
| Young (1799) | 350.414 Hz | +5.87 | Classical-era keyboard |
| Bach/Lehman | 350.809 Hz | +7.82 | Bach keyboard works, Well-Tempered Clavier |
| Neidhardt | 350.414 Hz | +5.87 | 18th century keyboard, near-equal alternative |
| Kellner (Bach) | 351.523 Hz | +11.34 | Bach keyboard reconstruction |
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 Third-Comma Meantone 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 Third-Comma Meantone, 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.
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.