Free White Noise Generator
White Noise Generator mixes white, pink, brown, blue and violet noise with rain, ocean waves, wind, campfire, stream, fan, heartbeat and clock sounds, each at its own volume. Every sound is generated live, so nothing loops. Start from presets like Deep sleep or Focus, and set a sleep timer that fades the mix out.
- Sounds:
- 13: 5 noise colors, 8 ambient
- Presets:
- 5 mixes, plus your own
- Sleep timer:
- 15 min to 1.5 h, or custom
- Price:
- Free
- Runs:
- Locally, in your browser
- Uploads:
- None: files never leave your device
- Account:
- Not needed
Quick answers
What is the difference between white, pink and brown noise?
White noise has equal energy at every frequency and sounds bright. Pink noise drops 3 dB per octave and sounds softer, like rain. Brown noise drops 6 dB per octave and is a deep rumble.
Processed on your device: your files are never uploaded. How it works
Network activity in this tab
What this page has requested since you opened the site in this tab. An upload is any request that sends data: POST, PUT, PATCH or a request with a body.
No uploads: nothing has been sent from this page.
No network requests yet.
To see every request, open your browser's developer tools (Network tab).
How to use the White Noise Generator
- Press Play, then switch sounds on and set their volume to build your mix (or pick a preset).
- Adjust the master volume to a comfortable, low level.
- Optionally set a sleep timer: the sound fades out and stops on its own.
- Your mix is remembered on this device; use Save as my mix to keep a favourite.
Credits & open source
Built from scratch on web standards. Thank you to the people who make these projects.
Web platform APIs used: Web Audio API, Web Workers, Canvas 2D, localStorage.
Full license texts: third-party notices · all credits
Frequently asked questions
Does the sound repeat?
No. Everything is generated live, sample by sample, so there is no loop point to notice.
Will it keep playing if I switch tabs?
Yes, on computers and Android it keeps playing in a background tab. On iPhone and iPad, Safari pauses web audio when the screen locks.