Microphone Tester

Free Online Microphone Tester with Volume Meter and Recording

What is this microphone tester tool?

This microphone tester is a free browser-based tool that lets you check if your microphone is working correctly. It displays real-time volume levels, allows you to select between multiple audio input devices, and includes a record-and-playback feature to hear exactly how your voice sounds. No software installation or account registration required.

How do I test my microphone online?

Click the "Allow Microphone Access" button and grant permission when your browser prompts you. Once connected, speak into your microphone and watch the volume meter respond in real-time. The bar visualization shows your audio levels from green (quiet) through yellow to red (loud), helping you verify your microphone is capturing sound properly.

Why is my microphone not working in the browser?

Common reasons include blocked browser permissions, incorrect device selection, or the microphone being used by another application. Check your browser's address bar for a blocked microphone icon and click it to allow access. If you have multiple microphones, use the device selector dropdown to switch between them. Close other applications that might be using your microphone, such as video conferencing software.

Can I record and playback audio to test my microphone quality?

Yes. After granting microphone access, click "Start Recording" to capture a test clip. Speak normally, then click "Stop Recording" to end the session. The tool creates an audio player where you can listen back to your recording and assess the audio quality, check for background noise, or verify your voice clarity before important calls or recordings.

How does the volume meter visualization work?

The volume meter uses the Web Audio API to analyze your microphone input in real-time. It calculates the root mean square (RMS) of the audio signal frequency data to determine the current volume level. The result displays as an animated gradient bar that responds instantly to sound, giving you visual feedback on your microphone's sensitivity and pickup range.

Is my audio data sent to a server?

No. All audio processing happens locally in your browser. Your microphone input never leaves your device, and recordings are stored temporarily in browser memory until you close the page or record a new clip. This makes the tool suitable for testing microphones before confidential calls or recordings.

How do I switch between multiple microphones?

If you have multiple audio input devices connected (USB microphone, headset, built-in microphone), use the dropdown selector at the top of the tool to choose which one to test. The tool automatically detects available devices after you grant microphone permission. Selecting a different device reconnects the audio stream and updates the volume meter to reflect the new input source.

Can I use this tool to test my microphone before a video call?

Yes, this tool is ideal for pre-call microphone checks. Test your microphone a few minutes before joining a meeting to ensure it's working and properly configured. Use the record-and-playback feature to check your audio quality, verify there's no excessive background noise, and confirm the correct microphone is selected if you have multiple devices. Use the Webcam Tester to also test your webcam before a video call.