Test your speakers or headphones online — check left/right channels and frequency range. Free, instant, no download needed.
Channel Test
Confirms the tone plays only from the correct side (best tested with headphones or well-separated speakers)
Frequency Sweep
20 Hz — 18,000 Hz over 12 seconds
Listen for the tone cutting out or distorting at any point — that can indicate a damaged speaker or a frequency range it can't reproduce. Most people can't hear much below ~30Hz or above ~16,000Hz even with healthy hearing, especially as age increases — silence at the extreme ends isn't necessarily a speaker problem.
⚠️ Start with a low volume, especially when testing with headphones — the frequency sweep and full-volume tones can be uncomfortably loud.
🔒 All sound is generated locally in your browser — nothing is recorded or uploaded.
This tool helps you check that your speakers or headphones are working correctly. Play a test tone in the left channel, right channel, or both, to confirm your stereo audio is correctly balanced and both sides are functioning. A frequency sweep plays a tone that gradually rises from 20 Hz to 18,000 Hz over 12 seconds, letting you listen for any point where the sound cuts out, distorts, or sounds noticeably weaker — a useful way to spot a damaged speaker or driver issue.
Start at a low volume, especially with headphones — sudden loud tones can be uncomfortable or, at high volumes, potentially harmful to your hearing. Use the volume slider to adjust before testing.
Most people can't hear frequencies much below about 30 Hz or above about 16,000 Hz, even with healthy hearing — this narrows further with age. Silence at the extreme ends of the sweep is usually normal human hearing range, not necessarily a speaker problem.
No. All tones are generated locally in your browser using the Web Audio API — nothing is recorded or sent anywhere.