D0 — 18.354 Hz
D0 (D0) is 18.354 Hz in standard equal temperament at A=440 Hz. It is MIDI note number 14.
D0 Frequency in All Tuning Systems
| Temperament | Frequency (Hz) | Cents from Equal | Common Usage |
|---|---|---|---|
| Equal Temperament | 18.354 Hz | 0.00 | Modern standard; piano, fretted instruments |
| Pythagorean Tuning | 18.333 Hz | -1.98 | Medieval/early music; string ensemble open fifths |
| Just / Pure | 18.396 Hz | +3.96 | A cappella vocal, barbershop, Renaissance |
| Meantone 1/3 Comma | 18.409 Hz | +5.18 | Renaissance vocal music in minor keys |
| Meantone 1/4 Comma | 18.390 Hz | +3.39 | Renaissance keyboard, early Baroque organ |
| 1/6 SC - Attenuated | 18.375 Hz | +1.98 | Baroque orchestral ensemble compromise |
| Kellner's Bach | 18.387 Hz | +3.11 | Bach keyboard reconstruction |
| Kirnberger III | 18.390 Hz | +3.39 | Classical-era keyboard, keys near C major |
| Vallotti | 18.375 Hz | +1.98 | Baroque/Classical orchestral tuning |
| Werckmeister III | 18.396 Hz | +3.96 | Baroque keyboard; Bach contemporaries |
| Werckmeister IV | 18.396 Hz | +3.96 | Baroque keyboard, strong key contrast |
| Werckmeister V | 18.437 Hz | +7.81 | Specialized Baroque keyboard |
Positive cents = sharper than equal temperament. Negative cents = flatter. 100 cents = 1 semitone.
D0 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) | 18.354 Hz | US, UK, and most modern ensembles worldwide |
| A = 442 Hz | 18.437 Hz | Many European orchestras; France, Germany |
| A = 443 Hz | 18.479 Hz | Berlin Philharmonic; some US orchestras |
| A = 432 Hz | 18.020 Hz | Alternative tuning; Baroque revival |
| A = 415 Hz (Baroque) | 17.311 Hz | Historically-informed Baroque performance |
f = f_at_A440 × (concert_pitch / 440)
D0 Across All Tuning Systems
Explore how D0 is tuned in each historical temperament system. Each tuning system gives D0 a slightly different frequency, affecting the harmonic character of chords and melodies.
D0 in Historical Temperament Systems
Explore how D0 (18.354 Hz in equal temperament) is tuned in each of the 15 historical non-equal temperament systems. Each system places D0 at a slightly different frequency based on its mathematical basis.
Tune D0 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.
