Output
Sine tone; frequency, Hz; stereo routing
Check left, right and centered headphone audio.
Headphone Test · At a glance
Quick answer: Check left, right and centered headphone audio. A centered cue should be heard through both channels.
The test loads when you open it. Device access is requested only after you choose to start.
Detailed guide
Sine tone; frequency, Hz; stereo routing
Explicit playback and a low output volume
Web Audio; AudioContext
Runs on your device; no tool-result upload
A generated sine wave helps check routing and audibility. Speaker, headphone and audio hardware response strongly influence what you hear; the tool cannot measure response without a calibrated recording chain.
A centered cue should be heard through both channels. Perceived balance can also depend on fit, output settings and the source chain.
Inspect mono accessibility mode and channel balance if every cue sounds the same. Reconnect the plug fully when using a wired headset.
Very high or low frequencies may be inaudible on working equipment. Do not increase the volume to chase an inaudible tone. This is not a hearing diagnosis.
It checks routing and tone audibility. It does not measure distortion, isolation or an objective physical frequency response.
Lower your volume first. Select a channel and frequency, then start a quiet tone. Stop playback before changing devices.
No. Open the interactive tool above in a modern browser. The instructions and explanations are available even with JavaScript disabled; running a test needs JavaScript.
Power settings, background tasks, browser scheduling, operating-system input processing and device settings affect measurements. Compare repeated attempts with identical settings rather than the single highest score.