Test your sound in the browser.
Find out if your speakers, headphones, subwoofer or mic are working properly, in a couple of minutes. It's free, there's nothing to install, and your audio never leaves your device.
Pick a test
Speaker Test
Make sure both speakers play, and that the sound sits in the middle.
Headphone Test
Check that left and right aren't swapped, and that your headphones are wired correctly.
Bass & Subwoofer Test
Find out how low your speakers or subwoofer can really go.
Microphone Test
Talk and watch the level move, then record a few seconds and hear how you sound.
Tone Generator
Play any tone from 20 Hz to 20 kHz, or sweep between two.
Noise Generator
White, pink or brown noise, for testing speakers or drowning out background sound.
Hearing Range Test
See how high you can hear on your own speakers or headphones.
Surround Sound Test
Play each speaker of your 5.1 or 7.1 setup in turn, and check it's in the right place.
What's wrong? Start here
Find the problem that sounds most like yours. Each row gives the usual cause and the tool to try next.
| What you notice | What usually causes it | What to run | Further reading |
|---|---|---|---|
| No sound at all | The wrong output device is selected, the system volume is muted, or a cable is out | Tone generator, to ask one question at a time | — |
| Sound from one side only | A loose or failed cable, a dead driver, or the balance setting pushed to one side | Speaker test | — |
| Left and right are swapped | Crossed speaker cables, or headphones worn the wrong way round | Headphone test | — |
| Thin, hollow sound with no centre | One speaker wired with its plus and minus reversed | Headphone test, polarity check | — |
| Hum or buzz, even with nothing playing | Mains hum, often a ground loop between two powered devices | Tone generator: play 50 Hz, then 60 Hz, to hear which one your hum matches | Mains hum, Ground loop |
| Crackling or popping | A loose connector, a damaged cable, or a driver near the end of its life | Frequency sweep, to find where it rattles | — |
| Distorted at high volume | Clipping: the amplifier or the signal is being driven past its maximum | Tone generator: raise the level slowly and note where it breaks up | Clipping |
| No bass | Small speakers that cannot reproduce it, or a subwoofer that is off, unplugged or set up wrong | Bass & subwoofer test | — |
| Microphone not picking up | Permission blocked, the input muted, or the wrong device selected | Microphone test | — |
Questions
Is it safe to play test tones?
Yes, as long as you start quiet. Every tool starts at a low level (-20 dBFS), but we can't see your system volume, so turn it down before you press play and bring it up slowly. High tones can be louder than they seem.
Does anything get uploaded?
No audio ever is. Every sound is made on your device as it plays, and anything your microphone picks up never leaves your device either. The privacy page explains exactly what our web host can see.
Can this test my hearing?
It gives you a rough idea of how high you can hear on your own equipment. It isn't a medical hearing test and can't diagnose hearing loss. If you're ever worried about your hearing, consult a specialist.
Why does the microphone test show dBFS and not decibels?
dBFS tells you how close the signal is to the loudest level your device can handle. Measuring real loudness in decibels needs a calibrated microphone, and the ones in laptops, headsets and phones aren't calibrated.
Do I need to install anything?
No. Everything works in any modern browser, on a computer or a phone. No downloads, no sign-up.