Free White, Brown & Pink Noise Generators for Sleep & Focus

Play high-quality background noise instantly in your browser. Choose the perfect sound for sleep, focus, relaxation, or study - complete with a built-in timer and smooth fade-out.

✓ No Signup ✓ Timer & Fade Out ✓ Privacy Friendly

Get NoiseTimer for Android

Take the noise generator with you. A lightweight, privacy-friendly app designed for your phone.

Get it on Google Play

Choose Your Noise

Select a sound profile below to open its generator, set your custom timer, and start listening instantly.

White Noise

Deep Sleep, Relaxation & Focus

Balanced sound that masks background distractions and helps improve sleep, focus, and privacy.

Play White Noise

Brown Noise

Concentration, Deep Work & Relaxation

Deep, low-frequency noise that many people prefer for concentration, relaxation, and ADHD support.

Play Brown Noise

Pink Noise

Deep Sleep, Stress Relief & Focus

Softer, more natural sound with balanced frequencies, often used for deep sleep, stress relief, and relaxation.

Play Pink Noise

How NoiseTimer Works

NoiseTimer generates high-quality sound in real time directly in your browser using the Web Audio API. Unlike websites that stream pre-recorded audio loops, every sound is synthesized locally on your device for instant playback, zero bandwidth usage, and complete privacy.

Frequently Asked Questions

Find quick answers to common questions about using our noise generators, timers, and audio fade-outs.

Is NoiseTimer free?

Yes. All noise generators are completely free to use.

Do I need to create an account?

No. NoiseTimer works instantly without registration or subscriptions.

Does NoiseTimer work on mobile?

Yes. NoiseTimer works on modern desktop and mobile browsers.

Do I need to install anything?

No. Everything runs directly in your browser—no downloads or apps required.

Are my settings or usage tracked?

No. NoiseTimer is designed to be privacy-friendly and does not require an account.

Can I use NoiseTimer offline?

Once the website has loaded, the generators run locally in your browser. An internet connection is only required to open the website.

What types of sounds are available?

NoiseTimer currently offers white, pink, and brown noise generators, with more sounds planned for future updates.

Can I set a sleep timer?

Yes. Every generator includes a sleep timer with an optional fade out, allowing the sound to stop automatically.