Noise generator
White noise generator.
Smooth, click-free white noise that loops for as long as you like — with a brightness control and a sleep timer. Press play.
Full, bright hiss — equal energy at every frequency.
About white noise
White noise is the sound you get when every frequency across the audible range plays at roughly equal power — a full, even hiss like a fan, an air conditioner, or static between radio stations. That equal, random spread is also what makes it useful beyond listening: it’s the kind of broadband, random noise engineers reach for to hear how a speaker, a room or an effect responds right across the frequency range.
For everyday use, that even spread is what makes white noise so good atmasking. It blankets sudden sounds — traffic, conversations, a creaky house, a busy office — so they stand out less against a constant background. It plays straight from your browser, loops without a seam, and lets you soften or brighten it with the brightness control. If the full-range hiss feels too sharp, pull the brightness down, or try pink or brown noise, which are deeper and gentler.
Common uses: an office or shared workspace where you want to cover conversation and keyboard noise, a steady backdrop for concentration, or quiet, consistent sound to play while you sleep. There’s a sleep timer so it can fade out on its own, and nothing is uploaded — the sound is generated on your device. Whether white noise helps you personally is worth testing; start at a low volume and raise it until it sits comfortably under whatever you’re doing.
White noise FAQ
What is white noise?
White noise contains every audible frequency at roughly equal intensity, which gives it a full, steady hiss — similar to an untuned radio or a fan. Because it covers the whole spectrum evenly, it is good at masking other sounds.
What do people use white noise for?
It is commonly used to mask distracting background noise, as a steady backdrop for concentration, and to help create a consistent sound environment for sleep. Whether it helps is personal — try it and see.
White vs pink vs brown noise — what is the difference?
White is the brightest and most even. Pink lowers the higher frequencies for a softer sound. Brown goes further, emphasising the low end for a deep rumble. Use the colour buttons to compare all three.
Is it free, and does it keep playing?
Yes — completely free, no sign-up, nothing to install. Once the page has loaded it generates the sound in your browser and loops continuously, with an optional sleep timer to stop it automatically.
Other colours: pink noise, brown noise, or see the noise generator overview.