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White noise gen

Play endless white noise for sleep, focus, or masking background sounds. Set volume and an auto-off timer, then let it run.

White Noise Gen

Steady static that masks distractions and helps sleep.

Status

Press Play to start the noise.

Elapsed
0:00
Timer
off
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What white noise is

White noise contains all audible frequencies at equal energy, sounding like untuned TV static or a fan. The constant, featureless sound raises the background floor so sudden noises, traffic, snoring, typing, blend in instead of startling you.

Generated, not looped audio

The static is synthesized from random samples with the Web Audio API and looped seamlessly, so it plays forever with zero bandwidth after the page loads. No audio files, no gaps, no repetition patterns.

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White Noise Gen FAQs

Does white noise help sleep?
Many people find it masks disruptive sounds and fall asleep faster. Keep volume moderate, about as loud as a quiet fan.
White noise vs fan sound?
A real fan is mostly low rumble. White noise is brighter and masks a wider range of sounds, including voices.
Can I leave it playing all night?
Yes. Use the 1 or 2 hour timer if you only need help falling asleep, or play forever for full-night masking.
Is it safe for babies?
Pediatricians suggest keeping it below 50 decibels and at least 2 meters from the crib. This tool cannot measure decibels, so stay conservative.
Does it work offline?
Yes. The noise is generated on your device after the page loads.
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