Free White Noise Generator
White, pink, and brown noise with a seamless loop, sleep timer, and gentle fades. Runs entirely in your browser — nothing is uploaded, no sign-up.
For sleep, keep it around conversation volume — just loud enough to mask background sounds.
The sound fades out over 1 second when the timer ends — no abrupt cutoff.
Sleep
Steady noise covers traffic, snoring, and hallway sounds so sudden changes stop waking you. Set the sleep timer and let it fade out after you drift off.
Focus & study
A consistent sound floor makes office chatter and keyboard clatter disappear, and many people find it easier to stay in deep work without unpredictable interruptions.
Tinnitus masking
Many people find that background noise makes ringing less noticeable in quiet rooms. It is a comfort measure, not a treatment — see an audiologist for persistent tinnitus.
White vs Pink vs Brown Noise
All three are broadband noise — the difference is how their energy is distributed across frequencies, which changes how they sound and what they mask best.
| Color | Spectrum | Sounds like | Often used for |
|---|---|---|---|
| ⚪ White | Flat — equal energy at every frequency | Radio static, loud fan | Strong masking of voices and high-pitched noise |
| 🌸 Pink | −3 dB per octave — equal energy per octave | Steady rain, shower | Sleep and long study sessions; less fatiguing |
| 🟤 Brown | −6 dB per octave — low-frequency weighted | Heavy rainfall, distant waterfall | Deep relaxation and sleep; most popular for sleep |
Which is best for sleep? The one you stop noticing. Brown and pink are gentler on the ears for all-night use, while white gives the strongest cover against sharp, high-pitched interruptions. Currently playing: Brown noise.
Quick Answer
White noise is a soft, static-like sound with equal energy at every frequency the ear can hear, which masks sudden background sounds like traffic, voices, or snoring. This free generator plays white, pink, and brown noise in a seamless loop with a sleep timer — entirely in your browser, with no downloads, accounts, or tracking.
How It Works
Pick a noise color: white for bright masking, pink for a balanced rain-like sound, brown for a deep low rumble
Press play — the sound fades in over one second (browsers require one click before audio can start)
Drag the volume slider to a comfortable level, roughly conversation volume for sleep
Optionally set a sleep timer (15, 30, or 60 minutes) — the sound fades out and stops on its own
Leave the tab open; the seamless 5-second loop repeats for as long as you need
Key Facts
- Three noise colors: white, pink, and brown — switch instantly without stopping playback
- Seamless 5-second loop with crossfade blending, so no clicks or pops at the loop point
- 1-second fade in and fade out on play and stop to avoid abrupt, jarring cuts
- Sleep timer with 15, 30, and 60-minute options that fades the sound out before stopping
- Live waveform visualizer so you can see the sound is running at a glance
- Used for sleep, focus and study sessions, office masking, and tinnitus masking
- 100% client-side: audio is generated in your browser, nothing is uploaded or tracked
- Free and unlimited — works offline once the page has loaded
Frequently Asked Questions
What is the difference between white, pink, and brown noise?
The difference is how sound energy is spread across frequencies. White noise has equal energy at every frequency, sounding like untuned radio static or a loud fan. Pink noise has equal energy per octave, so it drops about 3 dB per octave — softer and deeper, like steady rain or a shower. Brown noise drops about 6 dB per octave, concentrating energy in low frequencies for a deep rumble like heavy rainfall or a distant waterfall. As frequency rises, white stays flat, pink gets quieter, and brown gets quietest.
What color noise is best for sleep?
There is no single best color — it comes down to personal preference and your environment. Brown and pink noise are the most popular for sleep because their softer high frequencies are less stimulating than white noise, and many people find brown noise especially soothing. White noise provides the strongest masking of high-pitched interruptions like voices or sirens. Try each color at a low volume for a few nights and keep the one you fall asleep to most easily.
Is it safe to sleep with white noise all night?
For most people, yes — at a moderate volume. Keep it around 50 dB or lower, roughly the level of a quiet conversation, and place the device at least a meter from your head. Very loud noise played all night, every night, could contribute to hearing strain over time. If you share a room with an infant, use a low volume and keep the source far from the crib, and ask a pediatrician if you are unsure.
Can white noise help with focus and studying?
Many people find that steady noise helps them concentrate by masking distracting sounds — conversations, keyboard clatter, street noise — with a consistent, predictable backdrop. Brown noise and pink noise are common choices for study sessions because they are less fatiguing to listen to for long stretches than bright white noise. It does not work for everyone; if you find the sound itself distracting, silence or music may suit you better.
Does white noise help with tinnitus?
Many people with tinnitus find that background noise makes their ringing less noticeable, especially in quiet rooms where the contrast is sharpest — this is called sound masking. It is a comfort measure, not a treatment or a cure, and it does not address the underlying cause. If tinnitus bothers you regularly, an audiologist or ENT specialist can suggest approaches tailored to you, including formal sound therapy.
Does the generator work offline and loop forever?
Yes. The noise is synthesized in your browser with the Web Audio API, so once the page has loaded it needs no internet connection. The sound is a 5-second buffer crossfaded into a seamless loop, so it can run all night without clicks, pops, or repetition you would notice. Nothing you play is uploaded, recorded, or tracked.