Free tool
Free brown noise generator
Steady brown, pink, or white noise made live in your browser. Press play, set the volume low, and add a sleep timer if you want it to fade out on its own. No ads, no account, no download.
Press play to start. Keep the volume low.
Keyboard: Space play or pause. Your device volume still applies, so start low.
What is brown noise?
White, pink, and brown noise are random sound spread across the frequencies you can hear. White noise has equal energy at every frequency, so it hisses like static. Pink noise tilts toward the bass and sounds like steady rain. Brown noise tilts further and sounds like a distant waterfall or the hum inside an airplane. The name comes from Brownian motion, not from the color.
Why people with ADHD like it
A low, steady rumble covers sudden sounds like a neighbor's footsteps, a fridge cycling on, or a coworker's call. Many people with ADHD say it helps them settle into a task. The research is thinner than the buzz: trials of noise and ADHD tested white and pink noise, and none tested brown noise itself. Read the details in our guide to brown noise for focus, then try it for a week and see what you notice.
Kids, naps, and classrooms
Steady sound can help some children settle for sleep or quiet time, and some teachers play it softly during independent work. Pair it with our free visual timer to mark the end of rest time or work time.
Safety note: keep the volume low, especially around babies and young children. Place the speaker well away from the crib or bed, never right next to a child's ears, and use the sleep timer so it does not run all night. Children's ears are sensitive, so when in doubt, go quieter and ask your pediatrician.
Looking for headphones, earplugs, or sound apps? See our sound and noise picks.
Frequently asked questions
What is brown noise?
Brown noise is a steady, deep rumble with more energy in the low frequencies than white or pink noise. It sounds like a distant waterfall, heavy surf, or the hum inside an airplane cabin.
What is the difference between white, pink, and brown noise?
White noise has equal energy at every frequency and sounds like a hiss. Pink noise tilts toward the bass and sounds like steady rain. Brown noise tilts further and sounds deeper and rumblier.
Does brown noise help with ADHD and focus?
Some people with ADHD find it calming and good at covering sudden sounds. Research on noise and ADHD has tested white and pink noise, not brown noise itself, so treat it as something to try, not a treatment.
Is it safe to play brown noise for a baby or child?
Keep it quiet. Place the speaker well away from the crib or bed, keep the volume low, and use the sleep timer so it does not play all night. Ask your child's pediatrician if you have questions.
Is this brown noise generator free, and does it need an account?
It is free, needs no account, and makes the sound live in your browser with the Web Audio API. There are no audio files to download and nothing you do here is sent anywhere.
Link to this tool
Teachers, parents, and bloggers are welcome to link here. To link to the generator, copy this snippet:
<a href="https://focus.tools/brown-noise/">Free brown noise generator from Focus Tools</a>