Pink Noise Generator
Play a soft, balanced pink noise — like steady rainfall — to sleep, focus or relax. Layer in rain, ocean, wind and fan sounds, set a sleep timer, and let it fade out on its own.
How the Pink Noise Generator works
Pink noise is a soft, balanced sound — like steady rainfall or wind in the trees — that masks sudden noises so you can sleep, concentrate or relax. It has equal energy in each octave, which makes it fuller and gentler than bright white noise but not as deep as brown noise; many people find pink noise the most natural to listen to for hours. This generator runs entirely in your browser — press Play to start the pink noise, then blend in rain, ocean, wind or a fan and set each one's volume to taste. Set the sleep timer and it fades out on its own. Want a pure test tone instead? Use the Tone Generator.
Frequently Asked Questions
What is pink noise?
Pink noise is a steady, random sound with equal energy in each octave, so its power falls about 3 dB per octave as frequency rises. That balance makes it sound fuller and softer than white noise — close to steady rainfall, wind in the trees or a distant waterfall. It sits between bright white noise and deep brown noise, which is why many people find it easy and natural to listen to.
Is pink noise good for sleep?
Pink noise is popular for sleep because its soft, even sound masks sudden noises without the harsh edge of white noise, and small studies have linked steady pink noise to more restful, deeper sleep for some people. It is also used for focus and relaxation. Effects differ from person to person, so play it at a low, comfortable volume and use the sleep timer if you do not want it running all night.
What is the difference between pink, white and brown noise?
Pink, white and brown noise are all steady random sounds that differ in their frequency balance. White noise has equal energy at every frequency and sounds bright, like static. Pink noise has equal energy per octave, so it sounds fuller and softer, like steady rain. Brown noise rolls off the highs even more for a deep rumble like distant surf. Pink sits in the middle — softer than white, brighter than brown.
Are the sounds generated or recordings?
The sounds are generated live in your browser with the Web Audio API — there are no audio files to download and nothing is uploaded. The pink noise is generated once in your browser with the Web Audio API and then looped continuously, so there is no audio file to download and it keeps working offline after the page loads. Keep the volume comfortable, especially for long or overnight sessions.
Last updated: