Your White Noise & Focus Sound Generator
Free online white noise generator. Play white, pink or brown noise, rain or a fan sound, with a volume mixer and a sleep timer.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Brown noise at 40% volume with a 45-minute sleep timer → plays steadily, then fades out over the last minute and stops.Open the White Noise & Focus Sound Generator
Illustration. Open the tool for the real thing.
See it in action
The White Noise & Focus Sound Generator with sample data entered and the result showing.
What is the White Noise & Focus Sound Generator?
White, pink and brown noise are broadband sounds that mask sudden background noises and help with sleep, focus and tinnitus relief. Rather than streaming a pre-recorded file, this tool generates the noise live in your browser using the Web Audio API, so it can play seamlessly for as long as you like with no file to download and no interruptions.
Mix in a soft rain-like or fan-like texture, adjust the overall volume, and set a sleep timer that fades the sound out and stops automatically after a chosen number of minutes. It works entirely offline once the page has loaded and nothing is recorded or sent anywhere.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
White (flat), pink (softer, more natural) and brown (deep, rumbling).
Add a light rain- or fan-like layer.
Fades out and stops automatically.
No file to download, plays indefinitely.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
People who have trouble sleeping
Mask household or traffic noise with a steady sound.
Try it freeHow it compares
A plain look at this tool next to the usual alternative.
| This utility | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
What is the difference between white, pink and brown noise?
White noise has equal energy across all frequencies; pink noise reduces higher frequencies for a softer sound; brown noise reduces them further for a deep, rumbling tone.
Is white noise safe for babies?
Many parents use it, generally at a moderate volume and a safe distance from the crib — check current guidance for volume and duration.
Does it use much data?
No, the sound is generated locally and does not stream any audio file.
Can I leave it running overnight?
Yes, or set the sleep timer to stop it automatically after you fall asleep.
Will it work with the screen locked?
Behaviour depends on your device and browser; keeping the tab active in the foreground is most reliable.
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Try the White Noise & Focus Sound Generator now
Play white, pink or brown noise and other focus/sleep sounds in your browser. Free to use.
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