About FullSoundTest.
FullSoundTest is a free suite of audio testing tools that runs entirely in your browser. Play test sounds, sweep frequencies, check every speaker in a surround layout, test your mic, and screen your hearing — without installing anything or sending a byte of audio to anyone.
What this site is for
Audio problems are miserable to debug because the chain is long: app → browser → OS → driver → cable → speaker → your ears. Each tool here isolates one link of that chain, so instead of guessing you can test. Everything is built on the standard Web Audio API, works on Windows, macOS, Linux, Android, and iOS, and is free — supported by readers who buy us a coffee.
Privacy, in one paragraph
Test sounds are synthesized on your device, and microphone tests process audio locally in your browser's memory — recordings never leave your machine and are discarded when you leave the page. There are no accounts and no audio uploads. See the privacy policy for the boring details.
Found a bug? Want a tool?
Tell us what broke (with your browser + OS) or what you'd like tested next — we read everything.
Site FAQ
Is FullSoundTest really free?
Yes — every tool, no paywall, no sign-up. The site is supported by voluntary donations ("buy me a coffee") and may show unobtrusive ads that never cover or push down a test.
Do these tests upload my audio anywhere?
No. Output tests (speakers, tones, noise) are generated locally and never recorded. Input tests (mic test, spectrum analyzer) analyze your microphone inside the browser tab; the audio stays in memory on your device and is gone when you close the page.
Are the hearing tests medical tests?
No — they are screenings for curiosity and rough self-checks. Consumer hardware isn't calibrated, so results can't be compared to a clinical audiogram. If you have any concern about your hearing, see a licensed audiologist.
Which browsers work best?
Any modern browser: Chrome, Edge, Firefox, and Safari on desktop and mobile. Surround-channel output beyond stereo depends on your OS and hardware; the surround test explains what your setup supports.
Can I link to or embed these tools?
Linking is always welcome. Embedding the pages in iframes isn't supported — browsers restrict audio and mic permissions inside frames, which breaks the tests.