A=443 Hz Concert Pitch — Note Frequencies

About A=443 Hz

A=443 Hz is used by a number of European and Asian orchestras seeking a particularly bright ensemble sound. At approximately 11.76 cents above A=440 Hz, this pitch places the ensemble further above the ISO standard than the common 442 Hz European practice.

Players who perform at this pitch level often describe the ensemble sound as having more tension in loud passages — the slightly higher string tension and brighter wind resonances combine to create a more intense projection in large concert halls. Some conductors prefer this characteristic for certain orchestral repertoire.

Instrumentalists joining orchestras that tune to 443 Hz must be prepared for a larger adjustment than the more common 442 Hz deviation. The difference between 440 Hz and 443 Hz is perceptible as a noticeable tuning mismatch if an ensemble player has calibrated only to the ISO standard.

Chromatic Note Frequencies at A=443 Hz

All 12 chromatic notes in equal temperament, calculated at A=443 Hz reference pitch across octaves 3, 4, and 5. Hz values are rounded to 3 decimal places.

Frequencies computed from f = 443 × 2^{(MIDI − 69) / 12} where A4 MIDI = 69. The highlighted row is A, the concert pitch reference note at this standard.

Other Concert Pitch Standards

• A=440 Hz — ISO Standard (1939)
• A=432 Hz — Alternative Tuning
• A=442 Hz — European Orchestral
• A=415 Hz — Baroque Pitch (HIP)

Related Reference Pages

• A4 note page — full temperament frequency data
• Note frequency hub — all 153 notes
• Concert pitch hub — compare all 5 standards