Test your speakers
Check that both sides of your speakers or headphones play: send a tone to the left, the right or both, sweep up through the pitches, or play pink noise. It starts quiet, and nothing is uploaded.
- Nothing is uploaded
- Works offline after first visit
- Open source
- No watermark · limit is your device’s memory; phones hold less
Plays a test tone through the left speaker, the right speaker or both, sweeps up through the pitches, or plays pink noise, so you can hear whether each side of your speakers or headphones is working. It is free, and your choices are not uploaded: the sounds are made by code in your browser, and the page uses no file and no microphone. After one visit and a short wait the page works offline.
Nothing is playing.
Starting quiet. Your device volume is separate: lower it first.
Loud tones can hurt. Keep your device volume low, especially with headphones and at high pitches, which can be loud and tiring even when they seem faint. Stop if it hurts.
This is louder than the starting level. Lower your device volume first, and stop if it hurts.
Done
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Open the network tab. Your files never appear in it.
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Your files are processed on this device and never sent to a server. Reload the page to clear everything from memory.
What this test does
- Plays one sound at a time through the left channel, the right channel or both, so you can hear which side it comes from.
- Lets you pick the pitch of the tone, from a low note to a high one.
- Sweeps a tone smoothly from low to high, with the pitch shown as it rises.
- Plays pink noise, a steady hiss that is easier than a single tone to place in the room and to hear rattles in.
- Starts at a low volume and asks you to confirm before it goes louder.
What this test cannot tell you
- The page plays sound and you listen. It cannot hear your speakers, so it does not measure their quality, loudness or frequency response.
- It cannot say that a speaker is broken. A missing tone is a reason to check the cable, the settings and the volume below, not a diagnosis.
- Small speakers play very low and very high tones weakly or not at all. What you hear depends on your speakers and your hearing.
Sound missing on one side? Check these first
- Check the balance setting in your system’s sound settings; it can be set all the way to one side.
- Check that the right output is chosen: speakers, headphones and Bluetooth devices each show up as a separate output.
- Check for a mono-audio setting in your system’s accessibility options, which sends both sides to every speaker.
- Check the cable or the Bluetooth connection, and try another pair of headphones or another device.
How it works
- Turn your device volume down, choose Left, Right or Both, and press Play tone.
- Listen for the tone. It should come from the side you chose; if it comes from the other side or from both, check the settings listed below the test.
- Press Sweep to hear the pitch rise from low to high, or Pink noise for a steady hiss, and press Stop when you are done.
In your browser, not on a server
Your browser’s Web Audio API makes each sound in this tab: an oscillator at the pitch you chose, or a loop of pink noise, sent to the left channel, the right or both, through a volume control. The sweep moves the oscillator’s pitch smoothly from low to high.
Compared with upload-based tools: Nothing here needs a file, an account or a download: the sounds are made in your tab and go straight to your speakers.
Verify it yourself. Give the page a short while after one visit to save itself for offline use, then turn off Wi-Fi or switch to airplane mode and run the tool again. Or open your browser's developer tools (F12, or Cmd-Option-I on a Mac), pick the Network tab, and watch it while you convert. The panel above does the same count for you.
Questions
Is anything recorded or uploaded?
No. The sounds are made by code in this page and played through your speakers. The page does not use your microphone and does not ask for any permission, and nothing about what you play is sent anywhere.
How do I test the left and right speakers?
Press Left and listen: the tone should come only from the left speaker, or the left side of your headphones. Press Right to check the other side, then Both to hear them together. If a side is silent, check the balance setting and the connection first.
Why does the tone come from both speakers, or from one only?
If the sound comes from both sides when you chose one, check for a mono-audio setting in your system’s accessibility options. If your device has a single speaker, as many phones do, left and right play from that one speaker.
Does this measure how good my speakers are?
No. The page plays sounds and you listen to them. It cannot hear what comes out, so it cannot measure quality, volume or frequency response. Use it to check that each side plays and to hear whether a speaker rattles or goes quiet at some pitch.
Why does it start at a low volume?
A steady tone is harsher than music at the same setting, and a speaker you have not tested before may be turned up from last time. The test starts quiet, and asks you to confirm before it goes louder. Raise the volume a little at a time, on the page or on your device, and stop if it hurts.
Can I test headphones with it?
Yes. Left and Right then play in the matching ear. Keep the volume low before you put them on, because the tone sits close to your ear.
What is pink noise for?
Pink noise is a steady hiss with equal energy in each octave, so it sounds fuller and less shrill than white noise. Play it through one side or both to hear whether the sound fills the room evenly, or to listen for a rattle or a buzz that a single tone can miss. It is for listening only: this page does not measure what comes out.
Why can I not hear the lowest or the highest part of the sweep?
Small speakers, such as those in a phone or laptop, play very low notes weakly or not at all, and people differ in how high a sound they hear. Missing the ends of the sweep is common and does not by itself mean a fault.
Does the speaker test work on a phone?
Try it. Open this page in your phone’s browser and press Play tone. If you hear nothing, check the volume and any silent or mute switch on the phone.
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