Frequency → Note
Nearest Note
A4
0 cents
Exact Note Frequency
440.00 Hz
Note → Frequency
Calculated Frequency
440.00 Hz
Tuning Reference
Common: 432 Hz (alternative), 440 Hz (standard), 441-444 Hz (orchestral)
Wavelength
0.78 meters
2.56 feet
At 20°C (343 m/s sound speed)