What is Online Audio Test
Online Audio Test is a free, browser-based suite of audio diagnostic tools designed to help users quickly test and troubleshoot their audio hardware. It includes a microphone check, stereo left/right speaker and headphone test, Bluetooth latency measurement, hearing test, frequency generator, real-time spectrum analyzer, voice recorder, microphone quality analysis, and BPM/key detection for music. All tools run entirely in the browser using Web Audio API — no downloads, installs, or accounts are required.
Key Features
- No friction, instant results: One click and the test is running. No signup, no app store, no plugin.
- Comprehensive toolset: From mic check and earphone mic test to left/right audio channel verification, pink noise lossless test, and Bluetooth audio latency measurement in milliseconds.
- Privacy by default: All microphone audio is processed locally in the browser using the MediaRecorder API and Web Audio API. Nothing is ever sent to any server.
- Works on every device: Mobile, tablet, and desktop — completely responsive and touch-friendly.
- Real-time feedback: Live waveform, level meters, and frequency visualization give immediate, honest results.
- Free forever: No hidden costs, no premium tiers. All tools are free to use.
Who Is It For
Online Audio Test is for anyone who needs to check their audio setup quickly. Whether you're a remote worker troubleshooting a microphone before a Zoom call, a gamer measuring Bluetooth latency on wireless headphones, a musician verifying stereo imaging, or a casual user trying to figure out why only one earbud works — this site provides clear, actionable answers in seconds.
Pricing
All tools are completely free. No payment, no subscription, no hidden charges.
