White Noise Generator Free Online — 45+ Relaxing Sounds

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%.

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.

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.

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.

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 in your browser via FFmpeg WebAssembly.

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.