Mic Tester
See your microphone waveform, volume level, frequency, and device name in real time free, no download, no signup. Works in Chrome, Firefox, Edge, and Safari.
The TechTester microphone tester lets you check whether your microphone is working correctly in under 10 seconds directly in your browser with no software download, no app, and no account required. Open this page, allow microphone access when your browser asks, and your live audio waveform appears immediately. You can see the waveform moving as you speak, monitor your real-time volume level in decibels and frequency in hertz, identify which microphone device is currently active, and record a short clip to play back and hear exactly how your mic sounds to others on calls and recordings. Works with builtin laptop microphones, USB microphones, headset microphones, wireless mics, and all other microphone types on Windows, Mac, Android, and iOS.
Microphone Tester
Test your mic instantly — no signup, no upload. Everything runs in your browser.
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- Echo Cancellation: —
- Noise Suppression: —
- Auto Gain: —
Mic not working? Troubleshooting tips
- Make sure the browser has microphone permission (lock icon in URL bar).
- Try a different input device from the dropdown above.
- Close other apps (Zoom, Meet, Teams) that may be holding the mic.
- Use Chrome, Edge, Firefox, or Safari on HTTPS.
- On macOS check System Settings → Privacy → Microphone.
100% private — audio never leaves your device. Powered by Mic Tester Pro.
What the TechTester mic tester shows you
The TechTester microphone tester reads live audio data using the Web Audio API built into your browser. Here is what each display element tells you:
Live waveform
Real time visual graph of your audio signal. Moves when you speak. A flat line means no signal mic is muted or blocked.
Volume level (dB)
Microphone input volume in decibels updated in real time. Shows whether your mic is too quiet, too loud, or well balanced.
Frequency (Hz)
Dominant frequency of the sound detected. Shows pitch of voice or background noise. Useful for identifying hum or hiss.
Device name
Which microphone is currently in use. Confirms the correct mic is active when multiple devices are connected.
Recording + playback
Record a short clip and play it back to hear exactly how you sound to others on Zoom, Discord, Teams, or recordings.
Audio quality indicator
Visual feedback showing whether signal is clean, clipping (too loud), or noisy. Helps optimise mic position and gain.
How to test your microphone online
Step 1 – Open the mic tester and allow access
Open this page in your browser. A permission prompt appears asking whether this site can access your microphone click Allow. TechTester does not record or transmit your audio to any server. All processing happens locally in your browser. If you accidentally clicked Block, follow Section E for your specific browser.
Step 2 – Speak into your microphone
Once permission is granted, speak normally into your microphone. The waveform should move dynamically and the volume meter should rise and fall with your voice. If the waveform is completely flat when you speak, your microphone is not connected, is muted, or is not selected as the active input device.
Step 3 – Check device name and volume level
Confirm the device name shown matches the microphone you intend to test. If you have multiple mics connected, use the device selector dropdown to switch between them. A healthy speaking volume should read between -20 dB and -6 dB. Below -30 dB means too quiet. Above -3 dB means clipping and distortion on recordings and calls.
Step 4 – Record a clip and play it back
Click Record and speak a few sentences at your normal volume. Click Stop then Play. This tells you exactly how you sound to others on Zoom, Discord, Teams, or any recording software. If playback sounds muffled, distorted, or has heavy background noise, follow the fix guide in Section F.
Microphone permission blocked – fix by browser
Fix in Google Chrome
- Click the padlock icon to the left of the URL in the address bar
- Click Site settings or Permissions
- Find Microphone and change from Block to Allow
- Refresh the page mic tester will request permission again
Fix in Mozilla Firefox
- Click the padlock icon in the address bar
- Click Connection secure then Permissions
- Find Use the Microphone and click the X next to Blocked
- Refresh the page
Fix in Microsoft Edge
- Click the padlock icon in the address bar
- Click Permissions for this site
- Change Microphone from Block to Allow
- Refresh the page
Fix in Safari on Mac
- Go to Safari menu then Settings then Websites then Microphone
- Find techtester.online and change permission from Deny to Allow
- Refresh the page
Microphone not working? (7 fixes to try)
Fix 1 – Check browser permission (most common)
The most common cause of a flat waveform is that browser microphone permission has been denied. Follow Section E for your specific browser. After resetting the permission, refresh the page.
Fix 2 – Check system microphone settings
Windows: right click the speaker icon in taskbar, Open Sound settings, Input, confirm the correct microphone is selected and volume is not at zero. Mac: System Settings then Sound then Input, select your microphone and confirm the input volume slider is not at zero.
Fix 3 – Check the microphone is not muted
Many headsets and USB microphones have a physical mute button on the device or cable. Check no mute is active a red LED or crossed out mic icon indicates muting. Also check your microphone companion app (Blue Sherpa, RODE Connect, HyperX NGENUITY) has not muted the device in software.
Fix 4 – Select the correct device in the mic tester
If multiple microphones are connected your browser may have selected the wrong one. Use the device selector dropdown in the TechTester mic tester to switch to your intended microphone.
Fix 5 – Test in a different browser
If the mic tester does not work in one browser try another. If the waveform moves in Chrome but not Firefox the issue is browser specific. Privacy extensions and outdated browser versions can also block microphone access.
Fix 6 – Update audio drivers on Windows
Device Manager, expand Audio inputs and outputs, right click your microphone, Update driver, Search automatically. Or visit your PC or motherboard manufacturer website for the latest audio drivers directly. Restart after updating.
Fix 7 – Test on another device
Connect your microphone to a different computer and run the mic test there. If it works on the second device the problem is your original computer settings or drivers. If it fails on every device the microphone hardware is faulty.
TechTester mic tester vs onlinemictest.com and mic-test.com
Other mic testers – (limitations)
onlinemictest.com: waveform only, no dB volume reading
onlinemictest.com: no recording and playback feature
mictest.com: no frequency display or device selector
Neither has OS specific permission fix instructions
No Zoom, Discord, Teams troubleshooting advice
No volume interpretation – what dB level is good?
Single tool sites – no keyboard, GPU, or gamepad testing
TechTester – (your advantage)
Live waveform + dB + Hz + device name all shown together
Record and playback – hear exactly how you sound to others
Device selector to switch between any connected microphone
4 browser specific permission fix guides Chrome Firefox Edge Safari
7 fixes for mic not working covering all operating systems
Zoom, Discord, Teams specific troubleshooting advice
Part of TechTester hub – test keyboard, mic, GPU, gamepad here
FAQ:
Open techtester.online/mic-tester/ in your browser. Allow microphone access when prompted. Speak and watch the waveform if it moves your mic is working. Volume level, frequency, and device name all display in real time. Completely free, no signup, no download.
Most common cause: browser microphone permission has been denied. Click the padlock icon in your browser address bar, find the Microphone permission, and change it from Block to Allow. Then refresh the page.
No. The TechTester mic tester processes all audio locally in your browser. No audio is transmitted to our servers. If you use the Record feature the recording stays in your browser memory only and is deleted when you close the page.
For voice calls and recordings aim for peaks between -20 dB and -6 dB at your normal speaking volume. Below -30 dB is too quiet. Above -3 dB will cause distortion. Target peaks around -12 dB for the cleanest audio.
If your mic works in TechTester but not in a specific app the issue is in that application audio settings not your hardware. Open Zoom or Discord audio settings and manually select your microphone from the input device dropdown.
Yes. Works with all USB microphones including Blue Yeti, HyperX QuadCast, RODE NT USB, Elgato Wave, Shure MV7, and all other USB audio devices. Use the device selector to confirm your USB mic is selected as the active input.
Yes. Works on iOS via Safari and Android via Chrome or Firefox using the device built in microphone or any connected headset. Allow microphone access when the browser prompts you.
Use the TechTester mic tester to record a 30 second clip at your normal volume. Play it back and listen for background noise, room echo, and distortion. A volume consistently between -20 dB and -6 dB with minimal background noise indicates a good setup.