Online Tone Generator
Create browser-based tones from 20 Hz to 20 kHz with conservative output gain and live controls.
Start with a low device volume. High-frequency tones and bass tests may sound louder or quieter than expected. Stop immediately if a sound is uncomfortable, painful or unexpectedly loud.
Idle
Guide reviewed on . Tests are browser-based, practical listening checks unless otherwise noted.
Practical uses for a tone generator
A browser tone generator is useful for checking speaker routing, finding rattles, matching approximate levels, testing filters, and learning how different waveforms sound.
This tool generates tones locally with Web Audio. It is intended for short practical checks, not calibrated lab output or medical use.
Choosing frequency and waveform
Sine waves are best for simple frequency checks because they contain one main tone. Square, triangle, and sawtooth waves include harmonics and may sound louder or harsher at the same volume setting.
Start near 440 Hz if you only need to confirm playback, then move slowly. Use lower volume for high frequencies and stop if the sound is uncomfortable.
Common playback problems
If the page does not play, interact with the page once, check tab mute state, confirm the output device, and disable browser or operating system enhancements that may block or reshape generated tones.
FAQ
Does this upload audio?
No. The tone is generated in the browser and no uploaded audio file is required.
Why do square waves sound louder?
Square waves contain strong harmonics, so they can sound more intense than a sine wave at the same control setting.