About this tool
Generate a pure audio tone right in your browser using the Web Audio API — pick a frequency, waveform and volume, then play.
Frequently asked questions
What frequencies can I play?
Anything from 20 Hz to 20,000 Hz, which covers the normal range of human hearing.
Why do I hear nothing?
Your browser may not support the Web Audio API, or the volume is at zero. Audio also only starts after you click Play.