Free Online Sound Test

A complete sound test lab that lives in your browser

Audio Tests Online is a free suite of online sound tests and audio tools that run entirely in your browser. Nothing is installed, no account is needed, and no audio ever leaves your device — every tone, sweep, and noise is synthesized live with the Web Audio API. Think of this site as the ruler: our signals are the known reference, and what is being measured is your gear, your room, or your ears. Musicians, podcasters, gamers, and curious listeners use these tools to check new purchases, settle debates about what they can hear, and learn how audio really works. Each result page explains what your answer means in plain language, so a silent bass tone becomes a finding about your speaker — not a mystery.

Test your equipment: speakers, headphones, and microphones

Start with the quick online sound test to confirm the left, right, and center channels play where they should, then move to the dedicatedspeaker test for balance and polarity or theheadphone test for driver matching and imaging. Earbud wearers get seal and balance checks, bass lovers getsubwoofer and bass tests with real low-frequency tones, and home-theater owners can walk through 5.1 and 7.1 surround channels. Measure Bluetooth delay, fix lip-sync, and verify your voice chain with the latency, AV sync, and microphone tests. If you do not know where to begin, thediagnostic wizard turns your symptoms into a ranked verdict.

Generate reference signals: tones, sweeps, and noise

The tone generator plays exact sine, square, sawtooth, and triangle waves at any frequency with note names and stereo pan, while sweep generators glide between frequencies to expose rattles and room resonances. Thenoise generator covers white, pink, brown, blue, violet, and grey for masking and testing, and sleep sounds add timers with gentle fade-outs for the night. You will also find binaural beats, the Shepard tone illusion, an honest brown note explainer, tuning references in A440 and A432, a microphone instrument tuner, and a drift-freemetronome with tap tempo.

Screen your hearing, analyze quality, and train your ears

The online hearing test screens each ear from 125 Hz to 8 kHz and plots an audiogram, with companion checks for high and low frequencies, the classic 17.4 kHz mosquito tone, and stepped frequency walks. These are educational screenings, never medical diagnoses — if you have concerns, see a clinician. Analytical tools include a live spectrum analyzer and oscilloscope, loudness and decibel meters, and distortion and room acoustics checks. When you want to prove what you actually hear,ear training drills and double-blindABX tests measure your thresholds with proper statistics.

How browser testing works — and its honest limits

Every test starts only when you press play, and a persistent stop control stays on screen. Levels read in dBFS, relative to full scale, because a website cannot know your volume knob position — so pages report comparisons, never certified SPL. Phone microphones are uncalibrated, and small speakers physically cannot reproduce deep sub-bass, so silence below 100 Hz usually means driver limits, not hearing loss. Keep volumes low, especially with high-frequency tones, and retest on headphones before drawing conclusions. When a result surprises you, the related tools at the bottom of every page point to the next check worth running. Our learn guides explain the science behind each measurement.

Good habits for honest results

• Start at a low volume and keep it fixed for the whole test.
• Use wired headphones in a quiet room for hearing and stereo checks.
• Trust your first impression before replaying a trial.
• Compare against a second device before blaming your ears.