Online Microphone Test

Test your microphone input volume, sound clarity, and clipping detection directly in your browser.

Ready when you are

Click the button below to test your microphone levels and audio clarity.

Device: Default Microphone
Your audio is processed entirely in your browser and never uploaded.
Listening Say something into your microphone...
-60 dB -40 dB -20 dB -6 dB 0 dB
Live input level -60 dBFS
Microphone input ready
Your microphone works well
Audio levels are balanced and clear with no distortion detected.
92/100
Technical details & diagnostics
Peak input level -14 dBFS
Clipping distortion None
Acoustic Echo Cancellation (AEC) Enabled
Noise Suppression (ANS) Enabled
Automatic Gain Control (AGC) Enabled
Audio processing latency ~20 ms
Sampling rate 48,000 Hz (Standard)
Microphone access is blocked

Your browser has blocked microphone access. Follow the 3 steps below for your browser to grant permission:

1 Click the lock or site settings icon in the left of your address bar.
2 Set the Microphone switch to Allow.
3 Click Try again below to re-check your microphone.
No microphone found

We could not detect any connected audio input device. Please review the 3 items below:

1 Check that your microphone or headset 3.5mm or USB cable is plugged in firmly.
2 Verify that any physical mute switch on your headset cord or mic body is unmuted.
3 Ensure your operating system Sound Settings have an active input device enabled.
Read microphone troubleshooting guide
Preview State:
Next recommended check Test your webcam and video resolution
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How to test your microphone in 3 steps

1 Click Test my microphone above and allow browser microphone access when prompted.
2 Speak in your normal speaking tone at your regular desk seating distance for 5 seconds.
3 Review your decibel meter reading, inspect the waveform, and click Record and play back to hear your voice.

Microphone troubleshooting guide

Review common microphone symptoms, probable causes, and verified solutions:

Symptom Probable Cause Concrete Fix
Level meter does not move Hardware mute engaged or wrong device selected in browser. Check your inline mute toggle, click "Change" to select the correct audio input, or reconnect your cable.
Voice is quiet or faint (< -35 dBFS) Low microphone gain in Windows/macOS or sitting too far from mic. Open system Sound settings, raise microphone input volume to 80–90%, and position your mic 15–20 cm away.
Harsh crackling or distortion (Clipping at 0 dBFS) Input level is overloaded or microphone gain is turned up too high. Lower the microphone input volume in operating system settings until voice peaks stay comfortably around -12 dBFS.
Continuous 50Hz/60Hz humming sound Electrical ground loop or unshielded audio cable near power adapters. Unplug your laptop charger to test on battery, separate audio wires from power cords, or connect via USB DAC.

About this microphone test

The Sharing.io.vn microphone test evaluates your audio input hardware using the W3C Web Audio API and MediaDevices standard. When you begin the test, an AudioContext node captures the incoming uncompressed PCM audio stream and passes it through an AnalyserNode operating with a 256-point Fast Fourier Transform (FFT).

Our analyzer measures Root-Mean-Square (RMS) amplitude and converts it to decibels relative to full scale (dBFS). A reading of 0 dBFS represents the maximum possible digital amplitude before signal clipping occurs. For clear conference calls and podcasts, your normal speech should consistently peak between -18 dBFS and -12 dBFS.

Privacy guarantee: No audio data, voice snippets, or metadata are ever transmitted to any remote server. All signal processing, decibel analysis, and 5-second test playback loops are executed strictly in your local device memory and are destroyed when you close the tab. Quality scores are provided as an informative guide and not a substitute for certified acoustic laboratory testing.

Last updated: October 25, 2026 • Verified for Chrome, Edge, Safari, and Firefox.

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Frequently asked questions

Why does the tool report no microphone was found?
If your microphone is not detected, your browser was unable to enumerate an audio input device. This typically happens if your 3.5mm headphone jack is not inserted completely, your USB cable is loose, or your Windows or macOS privacy settings have disabled microphone access for your browser. Check your physical cable connection and system settings, then click "Check again".
What decibel (dBFS) level is ideal for voice calls?
For clear speech communication, your vocal peaks should ideally hover between -18 dBFS and -12 dBFS. If your level meter stays below -35 dBFS, listeners in Google Meet, Zoom, or Teams will struggle to hear you. Conversely, if your voice hits 0 dBFS, your signal will clip, resulting in harsh electronic crackling and distortion.
Is my voice audio recorded or sent to any server?
No. Sharing.io.vn is architected with complete client-side isolation. The audio stream from your microphone is analyzed in real-time inside your browser's local Web Audio context. Any optional 5-second test recordings are stored as temporary Blob objects in your browser's volatile RAM and are automatically deleted the moment you leave or refresh the page.
Why are echo cancellation and noise suppression enabled?
Acoustic Echo Cancellation (AEC), Noise Suppression (ANS), and Automatic Gain Control (AGC) are the standard browser DSP filters applied by WebRTC applications such as Zoom, Discord, and Google Meet. By testing with these filters active, you experience the exact sound profile that your colleagues and meeting participants will hear.
Can I test a Bluetooth headset microphone here?
Yes. First pair and connect your Bluetooth headset to your operating system. Once connected, reload this page or select your headset from the device dropdown under Device to choose your Bluetooth Hands-Free audio device. Speak into the headset microphone to verify that the microphone channel is receiving sound properly.
Does this microphone test work on iPhone and Android smartphones?
Yes. Sharing.io.vn is completely responsive and functions seamlessly on iOS Safari, Android Chrome, and mobile Firefox. On iPhone, Apple requires audio recording to be explicitly initiated by user touch, which is satisfied when you tap the "Test my microphone" button.
How do I fix microphone echo and audio feedback loops?
Acoustic feedback occurs when sound from speakers travels into your microphone. Fix this by wearing headphones, enabling Acoustic Echo Cancellation (AEC), and verifying that "Listen to this device" is disabled in Windows sound properties. For step-by-step instructions, see our Microphone Echo Fix Guide.
Why is my microphone volume too quiet even at 100%?
If your microphone input dBFS level remains low despite maximum slider volume, open Windows Sound Control Panel (mmsys.cpl) > Recording > Properties > Levels and add +10 dB or +20 dB of Microphone Boost. Follow our detailed walkthrough in the Microphone Volume Troubleshooting Guide.
Still encountering microphone permission blocks, low volume, or noise floor issues? View Microphone Troubleshooting Guide