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Audio Latency Tester
Measure loopback audio latency by playing a reference beep and listening for its return through your microphone or capture device.
Free to use, no watermarks, runs in your browser—nothing uploads to our servers
Setup tips
- Connect your audio output to your microphone or line-in for the most accurate measurement.
- Disable noise suppression / echo cancellation in your OS or streaming software.
- Increase speaker volume temporarily if using open-air detection.
Report a bug
If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.