An audio test plays a known sound through your speakers or headphones so you can check that each part works. The test at the top of this page plays a tone on the left, then the right. If you hear each one only on its own side, your stereo channels are wired and set up correctly.
What this site tests
AudioTestHQ covers the things that usually go wrong with sound on a computer or phone, and each test ends with a result card:
- Left / right test: are your channels on the correct side, or swapped, or mono?
- Speaker test: tones from 20 Hz to 20 kHz and a rattle check.
- Headphone test: channels, whether both drivers match, and stereo imaging.
- Bass and subwoofer test: where your bass fades out.
- 5.1 / 7.1 surround test: every speaker in a home-theatre setup.
- Microphone test: background noise, voice level and clipping, as numbers.
- Audio latency test: how many milliseconds your sound takes to go out and come back.
How we are different
Most online sound tests only play a beep. Ours also measure where a browser can: the microphone test reports your noise floor and voice peak in dBFS, and the latency test times real clicks through your speakers and microphone. Where a browser cannot measure something, such as the true loudness in your room, we say so instead of guessing. The methodology page lists every test signal and its limits.
Your privacy
Every test runs inside your browser using the Web Audio API. Sound you play and anything your microphone picks up stays on your device. We never upload or store recordings. See the privacy page for the details.
Before you start
- Turn your device volume down. Tests start at 20% and you can raise them.
- Pick the right output: on Windows, the speaker icon in the taskbar; on a Mac, the Sound menu in Control Center.
- For headphones, check the L and R markings and wear them the right way round.
Common questions
Is this audio test free?
Yes. Every test is free, with no sign-up and no app to install.
Does it work on a phone?
Yes. The tests work in current versions of Chrome, Safari, Edge and Firefox on phones, tablets and computers. On a phone, use headphones to check left and right, because most phone speakers are close together or mono.
Why do I hear the left tone in both ears?
Your device is probably set to mono audio, or you are using a single speaker. The left / right test page shows where to turn mono off on Windows, Mac, iPhone and Android.
Is my microphone recording saved?
No. Microphone tests analyse the sound in your browser and discard it. Nothing is sent to our server.
Last reviewed 14 November 2026 by Sri Murugan Systems. Found a mistake? Tell us.