Free Online Device Test
Free Online Speaker Test
Test your left and right speakers, play a selection of frequencies and check for clear, balanced sound directly in your browser.
The speaker tester works on compatible computers, tablets and mobile devices. Sound will play during the test.
Check Your Speakers
Lower the volume first, then test the left, right and combined speaker channels.
Start at a low volume
Sudden test tones can be loud. Reduce your device volume before starting, especially when using headphones.
Left Speaker
Play the selected tone through the left channel and confirm that sound comes from the left speaker.
Right Speaker
Play the selected tone through the right channel and confirm that sound comes from the right speaker.
Test Both Speakers
Send the same tone to both channels to compare balance, centre image and overall clarity.
Test volume
The page includes an adjustable test-volume control. Begin quietly and increase only enough to hear the tone comfortably.
Tone duration
Test tones can be played for 1, 2, 3 or 5 seconds.
Test Different Sound Ranges
Use the built-in tones to compare low, middle and high speaker output at a safe volume.
100 Hz — Low bass
Subtle low-frequency tone.
250 Hz — Bass
Low speaker response.
440 Hz — Reference
Standard A musical tone.
1,000 Hz — Midrange
Speech and vocal range.
3,000 Hz — Upper mids
Clarity and presence.
8,000 Hz — High tone
Treble speaker response.
No Microphone Permission Is Needed
This test only generates sound in your browser. It does not record audio or access your microphone.
How to Use the Speaker Test
- Reduce your device volume before starting.
- Press Test Left and confirm sound comes from the left.
- Press Test Right and confirm sound comes from the right.
- Use Test Both Speakers to check balance and clarity.
- Try the frequency tones to check low, middle and high sound.
What Good Speaker Balance Sounds Like
The left and right tones should sound similar in volume and quality when your device balance settings are centred.
Crackling, buzzing, distortion or a missing channel can point to a loose connection, damaged speaker, incorrect balance setting or audio-driver problem.
What the Online Speaker Test Checks
The browser speaker tester generates controlled sine-wave tones so you can confirm that sound reaches the correct output, compare the left and right channels and listen for obvious distortion across several useful frequencies.
Left speaker channel
Plays the selected tone through the left stereo channel so you can confirm channel routing and compare its volume with the right side.
Right speaker channel
Plays the selected tone through the right stereo channel to identify a missing, quiet or incorrectly routed output.
Both speakers together
Sends the same tone to both channels for a practical check of stereo balance, centre image and overall clarity.
Low-frequency response
The 100 Hz and 250 Hz tones help reveal whether the connected speakers can reproduce bass without buzzing, rattling or dropping out.
Midrange and speech clarity
The 440 Hz and 1,000 Hz tones cover important midrange frequencies used by music, speech and many notification sounds.
Upper-mid and treble output
The 3,000 Hz and 8,000 Hz tones help you check presence, brightness and whether high-frequency output is audible and clean.
Speaker Frequency Test Guide
Speakers do not reproduce every frequency at the same loudness. Compact laptop, phone and monitor speakers often sound much quieter at low frequencies than larger speakers or headphones. Compare clarity and channel consistency rather than expecting every tone to sound equally loud.
100 Hz — Low bass
A low tone that small built-in speakers may reproduce only faintly. Listen for rattling, buzzing or complete loss of output.
250 Hz — Bass and lower mids
Useful for checking body and warmth. Both channels should remain similar unless the speaker design is intentionally asymmetric.
440 Hz — Reference tone
The musical A reference sits in the midrange and should be easy for most working speakers and headphones to reproduce.
1,000 Hz — Core midrange
A clear midrange tone useful for checking basic output, speaker balance and speech-frequency reproduction.
3,000 Hz — Upper midrange
A more prominent tone that can reveal harshness, breakup or a weak tweeter and is best tested at a low volume.
8,000 Hz — High frequency
A high-pitched tone that may be quieter because of speaker limits, hearing differences, age or device audio processing.
When to Use an Online Speaker Tester
A browser speaker test is a useful first check before changing drivers, replacing cables, returning a device or arranging a repair.
Before a call, meeting or presentation
Confirm that the correct output device is selected and that both channels play before other people join.
After connecting speakers or headphones
Verify left-right orientation, stereo routing and sound output after using Bluetooth, USB, HDMI or an analogue cable.
When one side sounds quieter
Compare the same frequency through each channel and then review operating-system balance and accessibility settings.
When audio crackles or distorts
Repeat the tone at a lower volume and compare another output device to separate a speaker fault from a source or connection problem.
Speaker and Browser Compatibility
The test uses the Web Audio API and works with the output currently selected by your browser or operating system. This can include built-in speakers, wired headphones, USB audio devices, Bluetooth speakers, televisions, monitors and audio interfaces.
Browser autoplay rules normally require a button press before sound begins. Some phones, tablets and mono devices may combine the left and right channels instead of playing them separately.
What This Speaker Test Cannot Diagnose
The page can confirm browser-generated output, channel routing and obvious audible symptoms, but it cannot inspect the amplifier, speaker cone, crossover, cable, battery or internal electronics.
It does not measure frequency response, sound pressure level, total harmonic distortion, latency or audio quality scientifically. Those checks require calibrated microphones, controlled test signals and specialist equipment.
What the Speaker Test Results Mean
Both channels should play clearly and at a similar volume. Lower frequencies may be quieter on small phone or laptop speakers because compact speakers cannot reproduce deep bass strongly.
Stop immediately if you hear severe distortion or rattling. Retest at a lower volume and compare the result with another pair of speakers or headphones.
Speakers Not Working?
Try these checks before deciding that your speakers are faulty.
Check mute and volume
Confirm that the browser tab, operating system and connected speakers are not muted.
Select the right output
Choose the correct speakers, monitor, Bluetooth device or headphones in your sound settings.
Check the connection
Reconnect wired speakers or Bluetooth audio and confirm that the device is powered on.
Review balance settings
Make sure the left and right audio balance is centred in your device accessibility or sound settings.
Frequently Asked Questions
Is this speaker test free?
Yes. The speaker tester is free and does not require an account or software installation.
Why can I only hear one side?
Check your output-device selection, cable connection and left-right balance settings. One speaker or earbud may also be disconnected.
Can I use this test with headphones?
Yes, but reduce the volume first. The left and right controls are useful for checking headphone channels.
Why can I not hear the 100 Hz tone clearly?
Small phone, tablet and laptop speakers often cannot reproduce deep bass strongly. This does not always mean the speaker is faulty.
Why do my speakers crackle?
Crackling may be caused by excessive volume, a damaged cable, wireless interference, a driver problem or a damaged speaker.
Why did the browser block the sound?
Most browsers require a button press before audio can start. Press one of the test buttons again and check that the tab is not muted.
How do I test left and right speakers?
Lower the volume, press Test Left and confirm sound comes only from the left, then press Test Right and confirm sound comes only from the right.
Why are the left and right speakers reversed?
The speakers, headphones or cables may be connected the wrong way around, or the device may be worn on the incorrect sides. Some software can also swap channels.
Why is one speaker quieter than the other?
Check left-right balance, speaker placement, cable connections, Bluetooth pairing and whether dirt or damage is blocking one speaker.
Can this test check Bluetooth speakers?
Yes. Select the Bluetooth speaker as the active output device, then use the left, right and frequency controls normally.
Can I test laptop, monitor or television speakers?
Yes. The tone plays through whichever output the browser and operating system are currently using, including many HDMI monitors and televisions.
What frequency should I use to test speakers?
Start with 440 Hz or 1,000 Hz for a clear basic check, then compare lower and higher tones at a safe volume.
Why does the 8,000 Hz tone sound quiet or inaudible?
High-frequency hearing varies between people, and some speakers reduce treble output. Audio processing, age and listening volume can also affect audibility.
Can this speaker test measure sound quality?
No. It can help reveal obvious imbalance, crackling, buzzing or missing output, but it does not provide a calibrated sound-quality measurement.
Does this test use my microphone?
No. It only generates audio through the selected output and does not request microphone permission or record sound.
Is it safe to test speakers with headphones?
Yes at a low volume. Reduce both the device volume and the on-page test volume before playing tones, especially high-frequency tones.
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- Microphone Test — Check live microphone input and make a short recording.
- Webcam Test — Check your webcam before a call, meeting or recording.
- Complete Device Check — Work through the complete collection of free browser-based device tests.