All Audio Test Tools
Every SoundTester tool runs in your browser, free, with no sign-up — and none of them upload your audio.
Testing tools
Check channels, speakers, headphones, hearing range, phase, surround layout, and your microphone.
Left Right Speaker Test
Check that left really is left and right really is right, on speakers or headphones.
Open toolSpeaker Test
Stereo balance, frequency sweep, phase, and sub-bass checks for any speaker system.
Open toolHeadphone Test
Check left/right channels, smooth panning, and balance on any headphones or earphones.
Open toolBass Test
Sine tones from 10–200 Hz with a descent mode to find your lowest audible/reproducible frequency.
Open toolSpeaker Phase Test
Compare in-phase vs out-of-phase tones to catch reversed speaker wires.
Open toolHearing Test
Screen 250 Hz–8 kHz in each ear with rising tones. Not a medical device.
Open toolHearing Range Test
Find the highest (and lowest) frequency you can hear — 20 Hz to 20 kHz, no diagnosis.
Open toolSurround Sound Test
Click FL/C/FR/SL/SR/RL/RR/SUB nodes or run Auto Test for 5.1/7.1 layouts.
Open toolMic Test
Live level meter, device picker, and local record & playback. Nothing uploaded.
Open toolGenerators
Produce reference tones, sweeps, white/pink/brown noise, and binaural beats.
Tone Generator
Play sine, square, sawtooth, or triangle tones at any frequency from 20 Hz to 20 kHz.
Open toolFrequency Sweep Test
Sweep 20 Hz–20 kHz with adjustable duration, direction, and linear/log scaling.
Open toolWhite & Pink Noise Generator
White, pink, and brown noise with a 15–120 minute timer for focus or sleep.
Open toolBinaural Beats Generator
Delta/Theta/Alpha/Beta/Gamma presets with custom beat & carrier. Headphones required; not medical.
Open toolAnalysis
Turn microphone input into spectrum, waveform, and spectrogram views — computed locally.
How to use
- 1
Pick a category
Testing tools check your output or input; generators produce reference tones and noise; analysis tools visualize sound.
- 2
Open a tool
Every card links to a focused page with a short instruction line and a large control area.
- 3
Lower the volume first
Tone, bass, and sweep tools start at a low default volume on purpose. Raise the level slowly to protect your ears and speakers.
Each tool page solves one job so the controls stay obvious. If you are not sure where to start: use the sound test on the home page for a quick channel check, then open a dedicated tool for deeper checks.
FAQ
Are all tools really free?
Yes. Every tool on this site is free, works without an account, and runs entirely in your browser.
Which tools work on mobile?
The channel, speaker, headphone, tone, sweep, phase, bass, noise, and binaural tools work on modern phones. The spectrum analyzer, mic test, and latency test additionally need microphone permission, which mobile browsers also support.
Do any tools send audio to a server?
No. Tones are synthesized locally by the Web Audio API, and microphone input is analyzed on-device. Nothing is uploaded.
Related tools
Left Right Speaker Test
Check that left really is left and right really is right, on speakers or headphones.
Open toolSpeaker Test
Stereo balance, frequency sweep, phase, and sub-bass checks for any speaker system.
Open toolHeadphone Test
Check left/right channels, smooth panning, and balance on any headphones or earphones.
Open toolBass Test
Sine tones from 10–200 Hz with a descent mode to find your lowest audible/reproducible frequency.
Open toolSpeaker Phase Test
Compare in-phase vs out-of-phase tones to catch reversed speaker wires.
Open toolHearing Test
Screen 250 Hz–8 kHz in each ear with rising tones. Not a medical device.
Open tool