D018.354 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 18.333 Hz -1.98 Medieval/early music; string ensemble open fifths
Just Intonation (Major) 18.396 Hz +3.96 A cappella vocal, barbershop, Renaissance
Just Intonation (Minor) 18.396 Hz +3.96 Minor-key vocal music, string ensembles
Quarter-Comma Meantone 18.390 Hz +3.39 Renaissance keyboard, early Baroque organ
Third-Comma Meantone 18.409 Hz +5.18 Renaissance vocal music in minor keys
Sixth-Comma Meantone 18.375 Hz +1.98 Baroque orchestral ensemble compromise
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
Kirnberger III 18.390 Hz +3.39 Classical-era keyboard, keys near C major
Vallotti 18.375 Hz +1.98 Baroque/Classical orchestral tuning
Young (1799) 18.375 Hz +1.98 Classical-era keyboard
Bach/Lehman 18.375 Hz +1.98 Bach keyboard works, Well-Tempered Clavier
Neidhardt 18.375 Hz +1.98 18th century keyboard, near-equal alternative
Kellner (Bach) 18.387 Hz +3.11 Bach keyboard reconstruction

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.

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.