White Noise Generator Free Online — 45+ Relaxing Sounds
A free white noise generator with pink, brown, and other color noise options for sleep, focus, and relaxation. Adjustable volume and timer — plays continuously in your browser.
Mix custom soundscapes from 45 high-quality synthesized sounds
All processing happens in your browser. No audio is uploaded to any server.
Features
How to Use the White Noise Generator
- Click any sound card in the grid to activate it. The sound starts playing immediately.
- Adjust each sound's volume using its individual slider. Combine multiple sounds to create your ideal mix.
- Try a built-in preset like "Rainy Night" or "Deep Sleep" for an instant soundscape.
- Set a sleep timer if you want the sounds to stop automatically after a set time.
- To save your mix, click "Save Mix" and give it a name. Share it with anyone using the share link.
- To export, choose your duration, format, and quality, then click Download.
The Most Powerful Free White Noise Generator
Unlike basic noise generators that offer a few static loops, Timbrica's White Noise Generator synthesizes all 45 sounds in real time using advanced Web Audio API techniques — from spectrally accurate noise types to realistic nature simulations. Every sound has natural variation so it never feels repetitive. The built-in mixer, sleep timer with fade-out, background playback, and full export capabilities make this a complete sleep and focus solution — entirely free, with no account required.
Frequently Asked Questions
What is white noise and how does it help with sleep?
White noise contains equal energy across all frequencies, creating a consistent "shh" sound that masks disruptive noises. It helps your brain relax by providing a steady auditory backdrop, making it easier to fall asleep. Pair with our breathing exercises to relax even faster and stay asleep. Studies show it can reduce the time it takes to fall asleep by up to 40%.
What is the difference between white, pink, and brown noise?
White noise has equal energy at all frequencies (like TV static). Pink noise has more bass energy, sounding like a waterfall or steady rain — many people find it more natural and soothing. Brown noise emphasizes even lower frequencies, producing a deep rumble like distant thunder. Each type works differently for different people.
Will the sound keep playing if I minimize my browser?
Yes! The generator uses multiple techniques to keep audio playing in the background: Web Audio API, Media Session API, and browser keep-alive mechanisms. It works on desktop and most mobile browsers. On iOS, keeping the browser in the foreground or screen on is recommended for best results.
What are binaural beats?
Binaural beats occur when slightly different frequencies are played in each ear. Your brain perceives a "beat" at the difference frequency. For example, 200 Hz in the left ear and 207 Hz in the right creates a 7 Hz theta wave associated with meditation. Headphones are required for this effect.
Can I export my mix as an audio file?
Yes. Choose your desired duration (1 to 60 minutes), audio format (MP3, WAV, OGG, FLAC, OPUS, or AAC), and quality settings. The mix is rendered and encoded entirely in your browser — no upload needed.
How many sounds can I mix at once?
There is no hard limit — you can activate as many sounds as your device can handle. Most devices easily support 8–12 simultaneous sounds. The mixer provides independent volume control for each active sound.
Is my data private?
Absolutely. All audio is generated and processed entirely in your browser using the Web Audio API. No sound data is ever sent to any server. Your saved mixes and preferences are stored locally on your device.
We can — and it's free! Just send us a quick message with your idea. If you'd like to discuss it in detail, leave your email and we'll get back to you. You can stay anonymous.
