Audio Frequency Generator
Physics · Music · Hz Tester
440
Hz
A4 — Concert Pitch
20 Hz1 kHz5 kHz20 kHz
🔈 🔊
20 Hz
Lowest audible bass
60 Hz
AC hum (US power)
440 Hz
A4 Concert pitch
528 Hz
Solfeggio MI
1 kHz
Mid reference tone
1337 Hz
leet frequency
4186 Hz
C8 — highest piano
20 kHz
Highest audible
Piano Notes — Click to set frequency