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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.

What this tool does

Audio Latency Tester helps you measure loopback audio latency by playing a reference beep and listening for its return through your microphone or capture device.

What you get

Audio Latency Tester produces a direct output in this page and keeps all processing on your device, with nothing uploaded to our servers.

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.