G0 — 24.500 Hz
G0 (G0) is 24.500 Hz in standard equal temperament at A=440 Hz. It is MIDI note number 19.
G0 Frequency in All Tuning Systems
| Temperament | Frequency (Hz) | Cents from Equal | Common Usage |
|---|---|---|---|
| Equal Temperament | 24.500 Hz | 0.00 | Modern standard; piano, fretted instruments |
| Pythagorean | 24.444 Hz | -3.96 | Medieval/early music; string ensemble open fifths |
| Just Intonation (Major) | 24.527 Hz | +1.91 | A cappella vocal, barbershop, Renaissance |
| Just Intonation (Minor) | 24.527 Hz | +1.91 | Minor-key vocal music, string ensembles |
| Quarter-Comma Meantone | 24.597 Hz | +6.84 | Renaissance keyboard, early Baroque organ |
| Third-Comma Meantone | 24.639 Hz | +9.79 | Renaissance vocal music in minor keys |
| Sixth-Comma Meantone | 24.569 Hz | +4.87 | Baroque orchestral ensemble compromise |
| Werckmeister III | 24.611 Hz | +7.83 | Baroque keyboard; Bach contemporaries |
| Werckmeister IV | 24.527 Hz | +1.91 | Baroque keyboard, strong key contrast |
| Werckmeister V | 24.611 Hz | +7.83 | Specialized Baroque keyboard |
| Kirnberger III | 24.597 Hz | +6.84 | Classical-era keyboard, keys near C major |
| Vallotti | 24.555 Hz | +3.88 | Baroque/Classical orchestral tuning |
| Young (1799) | 24.583 Hz | +5.86 | Classical-era keyboard |
| Bach/Lehman | 24.555 Hz | +3.88 | Bach keyboard works, Well-Tempered Clavier |
| Neidhardt | 24.527 Hz | +1.91 | 18th century keyboard, near-equal alternative |
| Kellner (Bach) | 24.588 Hz | +6.21 | Bach keyboard reconstruction |
Positive cents = sharper than equal temperament. Negative cents = flatter. 100 cents = 1 semitone.
G0 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) | 24.500 Hz | US, UK, and most modern ensembles worldwide |
| A = 442 Hz | 24.611 Hz | Many European orchestras; France, Germany |
| A = 443 Hz | 24.667 Hz | Berlin Philharmonic; some US orchestras |
| A = 432 Hz | 24.054 Hz | Alternative tuning; Baroque revival |
| A = 415 Hz (Baroque) | 23.108 Hz | Historically-informed Baroque performance |
f = f_at_A440 × (concert_pitch / 440)
G0 Across All Tuning Systems
Explore how G0 is tuned in each historical temperament system. Each tuning system gives G0 a slightly different frequency, affecting the harmonic character of chords and melodies.
G0 in Historical Temperament Systems
Explore how G0 (24.500 Hz in equal temperament) is tuned in each of the 15 historical non-equal temperament systems. Each system places G0 at a slightly different frequency based on its mathematical basis.
Tune G0 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.
