Use this speaker test tool to check your audio sound on browser. Check left to right sound output on speaker, headphone and earbuds.
These tick off automatically as you test each side — a quick way to confirm nothing's wired backwards or gone silent before you rely on it.
The test plays an audible tone directly through your speakers or headphones — start around 30–40% volume so it isn't jarring, then adjust with the slider above.
You should hear the tone come only from that side. If you're on headphones or earbuds, the sound should clearly move from one ear to the other.
Both sides should play together at an even volume. Or use "Auto test" to run left, right, and both in one sequence without touching anything else.
Each side you successfully test ticks off automatically — a quick way to confirm both channels and stereo playback are all working before a call, a movie, or a mix session.
This tool sends an audio tone to your left channel and right channel separately, then to both together, using your device's normal stereo output. It's the quickest way to catch common audio problems: a headphone that's gone silent on one side, a desktop speaker that's not actually connected, a Bluetooth pairing that dropped to mono, or channels that are swapped left-for-right. Everything is generated live in your browser with the Web Audio API — no files to download, no app to install, and nothing is recorded or sent anywhere.
Reseat the headphone jack or Bluetooth pairing, check both speaker cables are firmly in, and make sure nothing is muted at the hardware level (a volume wheel, a mute switch on a cable).
If the same side is silent everywhere, the hardware itself is likely the problem. If it's fine elsewhere, the issue is more likely your device's audio settings or output port.
Windows, macOS, Android and iOS all have a left/right balance control that can get nudged to one side by accident — worth a quick look before assuming the hardware is at fault.
Still stuck after the test above? Work through these four common cases — most speaker and headphone problems fall into one of them.
Nothing plays on Left, Right, or Both, even at full volume.
Left or Right plays fine alone, but the other stays silent — or "Both" leans heavily to one side.
Audio plays on both sides but sounds broken, buzzy, or cuts in and out.
Wireless audio drops to mono, disconnects, or won't output sound at all.
Yes, completely free. No sign-up, no download, and no limit on how many times you run it — test as often as you like.
Yes. It uses whatever audio output your browser is currently sending sound to — wired headphones, Bluetooth earbuds, laptop speakers, or a full desktop speaker setup all work the same way.
Not necessarily. First check your device's balance setting and try the headphones or speakers on a second device. If that side stays silent everywhere, the hardware (cable, driver, or connector) is the likely cause; if it works fine elsewhere, look at software settings on the original device.
That's expected — "Both" sends the same tone to both channels at once, so if your setup is working correctly it should sound centred and slightly fuller than either side alone. If it sounds like it's only coming from one side during the "Both" test, that's a sign of a channel problem worth investigating.
No — this tool only plays sound, it never listens. No microphone is used anywhere on this page, and nothing about your test is saved or sent to a server.
Pink noise is a steady hiss that covers a broad range of frequencies evenly, which some people find easier to judge for balance and clarity than a single pure tone — useful if a plain tone sounds fine but something still feels "off" between the two sides.
Yes, as long as your device is currently outputting audio to it. Pair it as normal, make sure it's selected as the active output, then run the test the same way.
Speaker Test plays audio only — it never accesses your microphone, and nothing you hear is recorded or uploaded.