D1 — 36.708 Hz
D1 (D1) is 36.708 Hz in standard equal temperament at A=440 Hz. It is MIDI note number 26.
D1 Frequency in All Tuning Systems
| Temperament | Frequency (Hz) | Cents from Equal | Common Usage |
|---|---|---|---|
| Equal Temperament | 36.708 Hz | 0.00 | Modern standard; piano, fretted instruments |
| Pythagorean Tuning | 36.667 Hz | -1.93 | Medieval/early music; string ensemble open fifths |
| Just / Pure | 36.791 Hz | +3.91 | A cappella vocal, barbershop, Renaissance |
| Meantone 1/3 Comma | 36.819 Hz | +5.23 | Renaissance vocal music in minor keys |
| Meantone 1/4 Comma | 36.781 Hz | +3.44 | Renaissance keyboard, early Baroque organ |
| 1/6 SC - Attenuated | 36.750 Hz | +1.98 | Baroque orchestral ensemble compromise |
| Kellner's Bach | 36.775 Hz | +3.16 | Bach keyboard reconstruction |
| Kirnberger III | 36.781 Hz | +3.44 | Classical-era keyboard, keys near C major |
| Vallotti | 36.750 Hz | +1.98 | Baroque/Classical orchestral tuning |
| Werckmeister III | 36.791 Hz | +3.91 | Baroque keyboard; Bach contemporaries |
| Werckmeister IV | 36.791 Hz | +3.91 | Baroque keyboard, strong key contrast |
| Werckmeister V | 36.874 Hz | +7.81 | Specialized Baroque keyboard |
Positive cents = sharper than equal temperament. Negative cents = flatter. 100 cents = 1 semitone.
D1 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) | 36.708 Hz | US, UK, and most modern ensembles worldwide |
| A = 442 Hz | 36.875 Hz | Many European orchestras; France, Germany |
| A = 443 Hz | 36.958 Hz | Berlin Philharmonic; some US orchestras |
| A = 432 Hz | 36.041 Hz | Alternative tuning; Baroque revival |
| A = 415 Hz (Baroque) | 34.622 Hz | Historically-informed Baroque performance |
f = f_at_A440 × (concert_pitch / 440)
Instruments That Play D1
D1 (36.708 Hz) falls within the comfortable playing range of 7 instruments.
D1 Across All Tuning Systems
Explore how D1 is tuned in each historical temperament system. Each tuning system gives D1 a slightly different frequency, affecting the harmonic character of chords and melodies.
D1 in Historical Temperament Systems
Explore how D1 (36.708 Hz in equal temperament) is tuned in each of the 15 historical non-equal temperament systems. Each system places D1 at a slightly different frequency based on its mathematical basis.
Tune D1 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.
