How to test your speakers or headphones online
- Put on your headphones or make sure your speakers are unmuted and at a comfortable volume.
- Click "Left Channel" — you should hear sound only from your left ear or left speaker.
- Click "Right Channel" — you should hear sound only from your right ear or right speaker.
- Click "Both Channels" to confirm stereo sound plays evenly on both sides.
Speakers or headphones not working? Common fixes
- Check the volume in two places. Both your system volume and the browser tab's volume (right-click the tab, or check for a mute icon) need to be up.
- Confirm the right output device is selected. If you have multiple audio outputs (e.g. speakers and Bluetooth headphones), check your system sound settings to make sure audio is routed to the one you expect.
- Try a different cable or port. For wired headphones or speakers, a loose or faulty cable is one of the most common causes of one-sided or silent audio.
- Restart your browser. Occasionally a browser tab loses its audio output connection until it's reloaded.
Frequently asked questions
Why do I only hear sound from one side during the "Both Channels" test?
This usually points to a hardware issue — a damaged cable, a dirty headphone jack, or a speaker that isn't connected properly — rather than a problem with your browser or this tool.
Does this tool record any audio?
No. Speaker Test only plays a generated tone through your speakers — it does not access your microphone or record anything.
Can I use this to test Bluetooth headphones?
Yes, as long as your Bluetooth headphones are already connected and selected as your device's audio output.