SoundMasker
Press play to start the sound
Your mix A soft start: brown noise, rain, a forest brook, and a few birds. Save it to keep your own version.

Brown noise 36

EqualizerLow to high

Rain 32

Real rain recorded on quiet rural nights and on a tile roof. Played from random points with soft crossfades, so it never loops.

Forest brook 24

A forest stream recorded up close. Quick, bright water over stones, more detailed than the generated stream.

Birds 34

Real bird recordings, chosen at random with space between calls, so they do not repeat as one short loop.

Free white noise machine for sleep, focus, and privacy

SoundMasker is a white noise machine and sound masker that runs in your browser. Play white, brown, or pink noise, add real rain, ocean, fan, and nature recordings that never loop, and set a sleep timer for up to 8 hours. Use it at home to sleep and focus, or at work to keep conversations private and rooms calm. Pick what you need sound for below. Each guide plays a mix made for that job.

At home

Sleep, focus, and calm

Fall asleep faster, study without distraction, settle a baby, or quiet a busy mind.

For falling and staying asleep

Sleep sounds

Rain, brown noise, a fan, or the ocean all night long, with a sleep timer and no loop to notice at 3 a.m.

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More ways to use it at home

At work and in business

Offices, practices, and studios

Keep sessions and front-desk talk private, soften the dentist's drill, and give a spa, studio, or classroom a calm sound all day. These mixes use generated noise and CC0 recordings, so you can play them to clients without a music license.

Browse by sound

A white noise machine without the machine

A bedside sound machine plays one short recording on repeat. SoundMasker generates white noise, brown noise, and pink noise live, so there is no loop to notice at 3 a.m. Rain, waves, wind, and birds are real field recordings, played from random points and crossfaded so they never repeat the same way twice.

Sleep sounds you can shape

Pick a noise color, then move the ten-band equalizer until it sits right: deep and soft for sleep, brighter for masking speech in an office, gentle for babies. Layer it with rain sounds, a fan, or a fireplace, and save the mix to come back to.

Free, private, and no app

Everything plays on your phone or computer. The sound is made on your device, there is no download, and you do not need an account to listen. A free account lets you save your soundscapes and record a sound for the community to use.

Questions people ask

Is this white noise machine really free?

Yes. Every sound, the equalizer, and the sleep timer are free and play in your browser. An account is only needed to save a mix, record your own sound, or share with the community.

Can I record my own sound?

Yes. Under the noise, press Record your own sound. Birds in the forest where you are, rain while camping, or a sound from a video. Add a photo if you have one. Saving it shares the sound, so other people can use it too.

Does the white noise loop?

No. Noise is generated live, so it never repeats. Recordings like rain and waves are played from random points with soft crossfades, so you will not hear a seam.

Is white noise good for sleep?

Steady sound covers sudden noises like traffic, voices, and doors, which are what tend to wake people. Many people find brown or pink noise easier to sleep with than pure white noise because it is less hissy.

What is the difference between white, pink, and brown noise?

White noise has equal energy at every frequency and sounds bright. Pink noise rolls off the highs and sounds like steady rain. Brown noise is deeper still, like a distant waterfall or a strong wind.

Can I use it on my phone all night?

Yes. Open SoundMasker in your phone browser, press play, and set the sleep timer from 15 minutes up to 8 hours. Keep the screen on or the browser in front if your phone pauses audio in the background.

How loud should white noise be for sleeping?

Quieter than you think: about the level of a soft shower, around 50 dB, is enough for most people. For babies, keep the speaker across the room and the volume low.