White Noise Generator Online — Free Noise Machine for Sleep, Focus & Calm
Stream continuous white noise online right in your browser — plus pink and brown variants. Block out distractions, fall asleep faster, soothe a baby, mask tinnitus, or stay laser-focused while you work or study. No signup, no app, no ads.
Noise will play continuously until you press Stop.
What is White Noise?
White noise is a random sound that contains equal energy at every audible frequency between 20 Hz and 20,000 Hz. Because every frequency is present at the same intensity, white noise sounds like a steady “shhh” or the hiss of an untuned TV. The constant, flat acoustic background works like an audio blanket: instead of trying to remove every disruptive sound around you, it raises the ambient floor so sudden noises (a slamming door, a barking dog, a notification ding) don’t pop out and grab your brain’s attention.
Our online white noise generator synthesises real-time noise using the browser’s Web Audio API — there’s no recording, no compression, and no looping artefacts. You get a clean, continuous noise stream that you can run for hours.
Features of Our White Noise Generator
Pure White Noise
A mathematically uniform random signal with equal power across every frequency — the cleanest masking sound available.
Pink & Brown Variants
Switch instantly between white, pink (warm / rainfall), and brown (deep rumble) noise to find the texture that works best for you.
Built-in Sleep Timer
Auto-stop after 5, 15, 30, 60, or 120 minutes so the noise turns off once you have drifted off — saving your battery and your ears.
Continuous Looping
Smooth, gap-free playback that runs as long as the tab is open. Perfect for overnight sleep, marathon study, or work-from-home focus.
No Signup, No Install
Runs entirely in your browser using the Web Audio API. No account, no app store, no tracking — just open the page and press play.
Safe & Volume-Controlled
Smooth fade-in prevents startling clicks. Keep volume below 50 dB for overnight use and at a safe distance from babies.
Popular Uses for a White Noise Generator
Mask traffic, snoring, and footsteps so your brain stays in deeper sleep stages for longer.
Cover open-office chatter and notification dings while you read, code, write, or learn.
Mimic the womb-like background sound that calms newborns and helps them settle to sleep.
Gently mask ringing in the ears, especially while falling asleep or relaxing.
Play low-volume noise outside an office or therapy room to mask muffled voices.
Drown out mental chatter and create a calm acoustic environment for breathwork or yoga.
How to Use the White Noise Generator
1. Choose Noise Type
Pick White, Pink, or Brown noise depending on whether you want bright, balanced, or deep texture.
2. Adjust Volume
Start at ~30–40% and raise gradually. Lower volume is safer for overnight or baby use.
3. Optional Sleep Timer
Tap a timer preset if you want the noise to auto-stop after a set duration.
4. Press Play
Hit play and the noise will loop seamlessly until you stop it or the timer ends.
White vs Pink vs Brown Noise — Which Should You Use?
All three noise “colours” are random sounds, but their frequency balance is different — and that changes how they feel. Try each one and pick whichever your brain finds most soothing.
White Noise
Equal energy across all frequencies. Sounds like a TV tuned to a dead channel or a strong fan. Best for masking sudden, high-frequency noises.
Pink Noise
More energy in lower frequencies (1/f spectrum). Sounds like steady rainfall or wind in the trees. Often preferred for sleep and focus.
Brown Noise
Even more low-frequency emphasis (1/f² spectrum). Sounds like a deep ocean roar or distant thunder. Calming and easy on the ears at higher volumes.
Frequently Asked Questions
Everything you need to know about online white noise.
A white noise generator is a tool that produces a continuous sound containing equal power at every audible frequency. It creates a steady "shhh" sound that masks distracting noises in your environment, helping you sleep, focus, study, or relax.
Yes. Our online white noise generator is completely free, works directly in your browser, requires no signup, no app installation, and no downloads. You can play continuous white, pink, or brown noise for as long as you need.
White noise masks sudden environmental sounds (traffic, voices, snoring, creaks) that would otherwise interrupt sleep. By providing a constant, steady acoustic background, it helps your brain ignore intermittent noises and stay in deeper sleep stages longer.
White noise has equal energy at every frequency and sounds like radio static or a hiss. Pink noise has more energy at lower frequencies and sounds like steady rainfall — often preferred for sleep. Brown noise emphasizes the lowest frequencies even more and sounds like a deep ocean roar or distant thunder, which many people find very calming.
Most studies suggest pink noise or low-volume white noise improves concentration by masking sudden distractions without becoming distracting itself. Try each type and use whichever helps you stay in flow longest.
Yes, white noise is safe to play overnight as long as it is kept at a moderate, comfortable volume — typically below 50 dB. For babies, keep the device at least 7 feet (2 meters) away and use a low volume. Our built-in sleep timer can also auto-stop playback after 5, 15, 30, 60, or 120 minutes.
Many people with tinnitus find that low-volume white, pink, or brown noise helps mask the perception of ringing in the ears, especially while falling asleep. Speak to an audiologist for a personalized tinnitus masking strategy.
Yes. The generator works in all modern browsers on iOS, Android, tablets, laptops, and desktops. There is nothing to install — just open the page, press Play, and the noise will keep playing as long as the tab is active.
Listening Safety
Keep overnight noise below 50 dB. For babies, place the device at least 7 feet away and use a low volume. Prolonged exposure to loud noise can damage hearing — use our sleep timer to limit playback.