Microphone Test Online
A free microphone test online that listens to your mic in the browser and shows a live level, a waveform and a plain verdict: working, too quiet, too loud or muted. Record five seconds to hear yourself. It cannot measure loudness in real-world decibels (dB SPL) or judge your mic's quality the way a studio would.
Tap Start microphone testYour browser will ask to use the microphone. Choose Allow, then say a few words at your normal volume.
Nothing is uploaded. The sound is measured in this browser and a recording stays on this device until you close the page.
How This Microphone Test Online Works
This microphone test online asks your browser for the microphone, then reads the raw audio samples many times a second and turns them into three things you can see: a level bar, a waveform and a verdict. If the bar moves when you speak, the browser is receiving sound from that microphone, which is the same path Zoom, Google Meet, Discord or a browser-based call uses. Nothing is sent to a server; the samples are measured in this tab and thrown away. Updated 2026-11-03.
The level is shown in dBFS, decibels relative to digital full scale. 0 dBFS is the loudest sample a digital recording can hold; everything quieter is a negative number. The big number is the RMS (average) level of the last fraction of a second, so a steady full-scale tone reads about −3 dBFS, not 0. The thin mark on the bar is the recent peak. The page starts with the browser's call filters (echo cancellation, noise suppression and automatic gain) turned off, so you see what the microphone itself delivers. Turn Call filters on to hear roughly what a call app will send.
What the Verdict Means
After about two seconds of sound the page gives a verdict. The thresholds are this page's own rule of thumb for a voice at arm's length, not an industry standard, and they are listed here so you can judge them yourself:
| Verdict | What the page saw | What to do |
|---|---|---|
| Working | Your loudest moment reached −35 dBFS or more, with no repeated clipping | Nothing. Record a clip to hear how you sound. |
| Working but quiet | Loudest moment between −50 and −35 dBFS | Move closer or raise the input volume. |
| Too loud | Samples hit full scale and were cut flat in several moments | Move back or lower the input volume. |
| Only faint sound | Nothing louder than −50 dBFS: room noise only | Speak or clap. If nothing changes, pick another microphone. |
| Muted | Every sample exactly zero | A mute switch or the system settings are silencing the mic. |
A muted microphone is easy to tell apart from a quiet room: a real microphone always picks up a little hiss, so its samples are never all exactly zero. Pure zeros mean something switched the input off before the sound reached the browser.
Microphone Not Working? Fixes in Order
- Permission. If you chose Block, tap the lock or microphone icon in the address bar and set Microphone to Allow, then reload. On iPhone, open Settings, Safari, Microphone. On Android, long-press the browser icon, App info, Permissions.
- Another app holds the mic. If the page says the microphone is in use, close Zoom, Teams, Discord, OBS or a voice recorder and press Start again.
- Wrong microphone. Laptops with a headset, a webcam and a USB mic have several inputs. Pick each one in the Microphone list and watch which one moves the bar.
- Muted in hardware or system. Check the mute switch on the headset cable, a mic-mute key on the keyboard, and the input volume in Windows Sound settings or macOS System Settings, Sound, Input.
- Bluetooth headsets. Many switch to a lower-quality call mode when their microphone opens. A drop in sound quality the moment you press Start is the headset, not the page.
Hear Yourself: the 5-Second Recording
Press Record 5 seconds, speak, and the clip plays back below the buttons. Listening is the only honest way to judge sound quality: a level meter tells you the microphone works and how loud it is, not whether it sounds muffled, echoey or hissy. Record once with Call filters off and once with them on to hear what noise suppression does to your voice. The clip never leaves your device. This test does not measure frequency response, latency or real-world loudness in dB SPL; those need a calibrated reference microphone.
Checking a camera too, or another device? These open on this site:
Frequently Asked Questions
How do I test my microphone online?
Press Start microphone test, choose Allow when the browser asks, and speak at your normal volume. If the level bar moves and the verdict says your microphone is working, the browser is receiving sound. Press Record 5 seconds to hear yourself back.
Why does the microphone test show no sound?
Check four things in order: the browser permission (lock or microphone icon in the address bar), another app holding the mic (close Zoom, Teams or Discord), the wrong input selected (try each entry in the Microphone list), and a mute switch or low input volume in your system sound settings. If the page says the microphone is sending pure silence, it is muted before the sound reaches the browser.
Is this microphone test private?
Yes. The audio is measured inside this browser tab and is never uploaded. The 5-second recording is kept in memory on your device and disappears when you close or reload the page.
What does dBFS mean on the level meter?
dBFS means decibels relative to digital full scale. 0 dBFS is the loudest sample a digital recording can hold, so normal speech shows as a negative number. It is not the same as dB SPL, the loudness of sound in the room, which needs a calibrated microphone to measure.
Does the microphone test work on iPhone and Android?
Yes, in Safari on iPhone and iPad and in Chrome or Firefox on Android. Tap Start microphone test and allow the microphone. In-app browsers inside social or mail apps often cannot use the microphone; open the page in your normal browser instead.
Why does my voice sound different with Call filters on?
Call filters turn on the browser's echo cancellation, noise suppression and automatic gain, the same processing most call apps use. Noise suppression can make a voice sound thinner or cut off quiet words, and automatic gain raises a quiet microphone. Record with the filters off and on to compare.
Can this test tell me if my microphone is good quality?
Only partly. It shows whether the microphone works, how loud it is and whether it clips. Quality, meaning how natural or muffled it sounds, is best judged by listening to the 5-second recording, ideally on headphones.