About SoundTester

Free, fast audio tests that work in any modern browser, with nothing to install and no sign-up.

What it is

SoundTester has 19 tools for checking speakers, headphones, microphones and your hearing, plus generators for tones, noise and test files. Each tool does one job, works straight away, and explains what your result means and how to fix what it finds.

How it works

Every sound is generated live in your browser with the Web Audio API. Tones and sweeps are synthesized to the exact frequency, noise is created mathematically so it loops without a click, and microphone analysis happens on your device. The only audio files are a few short spoken channel labels (“Left”, “Right”…).

Accuracy

Test signals are generated precisely in the browser. What you hear also depends on your operating system’s audio settings and your hardware: sound card, speakers, headphones and microphone. The hearing tests are screenings, not medical diagnoses, and the decibel meter is approximate unless you calibrate it. Each page explains its own limits.

Privacy

Nothing you record or measure leaves your device. See the privacy policy.

Contact

Found a bug, have a test idea, or a question? Email hello@soundtester.dev.

All tools

• Left/Right Sound Test: Check that left and right channels play from the correct side.
• Speaker Test: Channels, full-range sweep, rattle check and wiring polarity.
• Headphone Test: Left/right, driver matching, 3D imaging, bass and seal.
• Bass Test: Find the lowest frequency your speakers or headphones can play.
• Subwoofer Test: Crossover blend, rattles, phase and room response.
• Surround Sound Test: Test every 5.1 and 7.1 speaker, with true multichannel output.
• Polarity Test: Find out if a speaker is wired out of phase, with a blind A/B test.
• Audio Latency Test: Measure Bluetooth and audio delay in milliseconds.
• Frequency Test: Sweep 20 Hz to 20 kHz to find your system’s frequency range.
• Mic Test: Check your microphone with live levels, playback and diagnostics.
• Decibel Meter: Measure noise levels in dB with your microphone.
• Spectrum Analyzer: Live frequency spectrum and spectrogram from your mic.
• Hearing Test: Check each ear across 250 Hz to 8 kHz and get an audiogram.
• Mosquito Tone Test: High-frequency hearing check and estimated hearing age.
• Perfect Pitch Test: Identify random notes to test your absolute pitch.
• Tone Generator: Play any frequency from 1 Hz to 22 kHz in four waveforms.
• Noise Generator: White, pink, brown, blue, violet and grey noise.
• DTMF Tone Generator: Play and decode touch-tone phone keypad tones.
• Test Tones: Download WAV test tones, sweeps and noise for calibration.