Online white noise
Play white, pink or brown noise in your browser to sleep, focus, study or soothe a baby, with volume control and a sleep timer.
How to useWhite, pink and brown noise
Available in: 
Online white noise: what it is for
Play white, pink or brown noise right in your browser, with no app to download. The sound is generated on the spot and loops seamlessly.
Adjust the volume and set the timer to turn it off by itself after 15 minutes to 8 hours.
How to use
- Choose the type of noise.
- Adjust the volume and the timer.
- Tap Play.
When to use it
- Sleeping better by masking noise.
- Helping a baby fall asleep.
- Concentrating while studying and working.
Frequently asked questions
What is the difference between white, pink and brown noise?
White noise has the same energy at every frequency and sounds like TV static. Pink noise has fewer highs and sounds like rain. Brown noise is deeper, like a waterfall or strong wind.
Does white noise help babies sleep?
Many parents use it because it resembles the sound of the womb and masks household noise. Keep the volume low and the device away from the crib.
Does it work with the screen locked?
On many phones the sound keeps playing with the page open in the background, but some systems pause the browser. Keep the screen on if it stops.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.