D7 — 2349.318 Hz
D7 (D7) is 2349.318 Hz in standard equal temperament at A=440 Hz. It is MIDI note number 98.
D7 Frequency in All Tuning Systems
| Temperament | Frequency (Hz) | Cents from Equal | Common Usage |
|---|---|---|---|
| Equal Temperament | 2349.318 Hz | 0.00 | Modern standard; piano, fretted instruments |
| Pythagorean | 2346.660 Hz | -1.96 | Medieval/early music; string ensemble open fifths |
| Just Intonation (Major) | 2354.630 Hz | +3.91 | A cappella vocal, barbershop, Renaissance |
| Just Intonation (Minor) | 2354.630 Hz | +3.91 | Minor-key vocal music, string ensembles |
| Quarter-Comma Meantone | 2353.964 Hz | +3.42 | Renaissance keyboard, early Baroque organ |
| Third-Comma Meantone | 2356.399 Hz | +5.21 | Renaissance vocal music in minor keys |
| Sixth-Comma Meantone | 2351.979 Hz | +1.96 | Baroque orchestral ensemble compromise |
| Werckmeister III | 2354.630 Hz | +3.91 | Baroque keyboard; Bach contemporaries |
| Werckmeister IV | 2354.630 Hz | +3.91 | Baroque keyboard, strong key contrast |
| Werckmeister V | 2359.954 Hz | +7.82 | Specialized Baroque keyboard |
| Kirnberger III | 2353.964 Hz | +3.42 | Classical-era keyboard, keys near C major |
| Vallotti | 2351.979 Hz | +1.96 | Baroque/Classical orchestral tuning |
| Young (1799) | 2351.979 Hz | +1.96 | Classical-era keyboard |
| Bach/Lehman | 2351.979 Hz | +1.96 | Bach keyboard works, Well-Tempered Clavier |
| Neidhardt | 2351.979 Hz | +1.96 | 18th century keyboard, near-equal alternative |
| Kellner (Bach) | 2353.569 Hz | +3.13 | Bach keyboard reconstruction |
Positive cents = sharper than equal temperament. Negative cents = flatter. 100 cents = 1 semitone.
D7 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) | 2349.318 Hz | US, UK, and most modern ensembles worldwide |
| A = 442 Hz | 2359.997 Hz | Many European orchestras; France, Germany |
| A = 443 Hz | 2365.336 Hz | Berlin Philharmonic; some US orchestras |
| A = 432 Hz | 2306.603 Hz | Alternative tuning; Baroque revival |
| A = 415 Hz (Baroque) | 2215.834 Hz | Historically-informed Baroque performance |
f = f_at_A440 × (concert_pitch / 440)
Instruments That Play D7
D7 (2349.318 Hz) falls within the comfortable playing range of 5 instruments.
D7 Across All Tuning Systems
Explore how D7 is tuned in each historical temperament system. Each tuning system gives D7 a slightly different frequency, affecting the harmonic character of chords and melodies.
D7 in Historical Temperament Systems
Explore how D7 (2349.318 Hz in equal temperament) is tuned in each of the 15 historical non-equal temperament systems. Each system places D7 at a slightly different frequency based on its mathematical basis.
Tune D7 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.
