How Loud Should White Noise Be for Adults? The Answer Is Quieter Than You Think

How loud should white noise be for adults? If you're lying in bed wondering if the volume of your white noise machine is right, you've probably read the same number everywhere: 50 to 70 decibels (dB), the standard unit for sound intensity.

That range didn't actually come from sleep research. It's a hearing-safety threshold for workplace noise regulation and was relabeled as sleep advice. A 2026 study published in SLEEP by Basner and associates found it can work against the sleep you're trying to protect.⁽¹⁾

The number the evidence actually supports is lower: 40 to 50 dB. This article explains what that sounds like, why the higher range stuck around and what to do when 50 dB doesn't cut it.

Key Takeaways

• Set white noise to 40 to 50 decibels (dB) at your pillow. Every controlled trial showing that white noise improves sleep used a level in that range.

• Seventy dB is a hearing-safety ceiling, not a sleep target. The two often get confused, and they're about 25 dB apart.

• If 50 dB isn't masking the noise in your bedroom, move the speaker of the sound machine closer to the noise source or wear earplugs. Turning up the volume costs you REM sleep, the stage tied to memory and emotional processing.

Table of Contents

• How Loud Should White Noise Be for Adults?

• What 40 to 70 Decibels Actually Sounds Like

• Why 50 to 70 Decibels Became the Standard Advice

• How to Set Your White Noise Volume in Three Steps

• What Happens if Your White Noise Is Too Loud

• When to Use Earplugs Instead of Turning It Up

• What White Noise Is and How Masking Works

• Does the Color of Noise Change the Right Volume?

• Conclusion

• Frequently Asked Questions

How Loud Should White Noise Be for Adults?

Set your white noise to 40 to 50 dB, measured near your pillow and not at the machine itself. That's the range used by every controlled trial that found white noise improved sleep. Anything louder starts working against you.

A 2017 trial published in Frontiers in Neurology found that sound spread evenly across all audible frequencies (broadband sound) at 46 dB helped healthy adults fall asleep faster than normal room noise did.⁽²⁾

A 2026 randomized controlled trial published in BMC Geriatrics tested approximately 40 to 50 dB of white noise for 30 days in adults 65 and older, and found better sleep quality scores than a control group.⁽³⁾

The ignorability test doesn't require a sound level meter. If you can't easily ignore the white noise once you're settled in, it's too loud. White noise should mask the environmental sounds around you, not become the thing you're listening to.

Another thing to consider is if you have existing hearing conditions. If you're using white noise for tinnitus relief or are sleeping with hyperacusis, speak to your doctor first. They can help you find a volume level that helps rather than harms your ears and sleep.

What 40 to 70 Decibels Actually Sounds Like

Forty dB sounds like the quiet hum of a refrigerator, while 70 dB sounds like a running vacuum cleaner. The gap between the number that helps you sleep and the number that's actually a hearing-safety ceiling is wider than most volume dials make it feel.

The decibel scale measuring sound volume is logarithmic, not linear. This means that each 10-point jump represents roughly 10 times more sound energy, not just a little more volume. According to an article written by Daniel J. Fink, MD and published in the American Journal of Public Health, an 85 dB sound carries about 31.6 times the energy of a 70 dB sound.⁽⁴⁾ That's why the 25 dB gap between the sleep-benefit range and the hearing-safety ceiling matters much more than it looks like on paper.

Why 50 to 70 Decibels Became the Standard Advice

The 50 to 70 decibel range didn't come from sleep research. It's a hearing-safety guideline from workplace and environmental noise regulation that became bedtime advice somewhere along the way.

U.S. workplace safety agencies cap 8-hour daily noise exposure at 85 to 90 dB to prevent hearing loss. The Environmental Protection Agency adjusted those numbers to a 70 dB, 24-hour average for the general public. This accounts for continuous exposure for an entire day rather than a single shift. As Fink argued, the 70 dB figure is about preventing hearing loss over a lifetime, and he considers even that too permissive. Either way, it was never a sleep target.

Meanwhile, the World Health Organization recommends a safe average nighttime noise of below 40 dB outside bedrooms.⁽⁵⁾ These authorities both land well below the number that most standard white noise guides repeat.

Somewhere between hearing-safety regulation and your nightstand, “What won't damage my ears?” turned into “What will help me sleep?” Those are different questions. The safety number isn't wrong. It's just answering a different one.

How to Set Your White Noise Volume in Three Steps

It takes three simple steps: place the white noise machine's speaker between you and the noise (the closer it is to the noise source, the better). Start low and raise the volume only until the disruptive sound disappears. Then, check yourself once you're lying down.

• Place the speaker between you and the noise. Moving your device, like Manta White Noise Machine, closer to a shared wall or window works better for masking than turning up the volume ever will.

• Start at a low volume and gradually turn it up until it masks the intrusive sound. Don't go further than that.

• Apply the ignorability test once you're lying down: if you can't easily ignore the white noise itself, it's too loud.

Test the noise level in the room where you actually sleep, and not where the white noise machine sits during the day. Daytime naps or focus sessions might need a higher volume than nighttime sleep. Background noise tends to be louder while you're awake and moving around. Pay attention to how you feel in the morning. Do you have a headache? Do you wake up with lasting grogginess? These are signs you need to dial the volume down.

If you want a more precise reading, a free decibel meter app such as NIOSH Sound Level Meter (iOS) or Decibel X (Android) can confirm your volume setting. While learning how to use a white noise machine effectively takes a little trial and error, the ignorability test helps most people achieve the right volume without an app.

What Happens if Your White Noise Is Too Loud

Running white noise above 50 decibels is an issue for sleep architecture, the pattern of stages you cycle through overnight. At typical bedroom volumes, it isn't a hearing-safety one.

The 2026 study by Basner and associates found that broadband noise can reduce REM sleep, the stage responsible for memory consolidation and emotional processing. Twenty-five healthy adults tested pink noise (a deeper, steadier relative of white noise) at 40 dB and 50 dB against a night where they wore earplugs and a night without either. At 50 dB, the pink noise significantly decreased REM sleep even though it slightly reduced nighttime awakenings. Earplugs, not louder noise, came closest to restoring normal sleep patterns.

The volume this article recommends isn't about protecting your hearing; it's about protecting your sleep quality. Increase the volume to drown out a genuinely noisy room, and you might be trading the sleep you're trying to protect for a few more hours of quiet.

One precaution worth keeping either way: white noise, at any volume, can mask sounds you need to hear, like emergency alarms or a child calling for you. Keep alert sounds louder than your white noise, not the other way around. Read more on whether it's safe to use sound machines to fall asleep for the full picture.

Some people notice they sleep worse without their white noise after using it for a while. That's because your brain learns to associate the sound with sleep. It's not a reason to avoid white noise or a health risk. It's just worth knowing if you ever travel without your white noise machine.

When to Use Earplugs Instead of Turning It Up

If 50 dB of white noise still isn't masking a truly noisy bedroom from a busy street or a snoring partner, the fix is earplugs or better speaker placement, not increasing volume.

The 2026 study by Basner and associates found that earplugs safely outperformed pink noise, though researchers noted even earplugs started to lose their effectiveness against the loudest room noises (65 dBA). It restored sleep patterns closer to what participants got in a quiet room. Masking works on a ratio between the disruptive sound and what's competing with it. In essence, reducing what reaches your ear beats raising what's fighting it.

Here's an ordered way to work through it. First, move the white noise speaker closer to the noise source. If that isn't enough, wear a pair of earplugs, such as Manta Sleep Earplugs, on nights when the room is loud. Figuring out how to use earplugs comfortably takes a little practice, but it's one way of blocking out noise without increasing your room's overall volume. Only after trying both without success should you consider raising the volume. Even then, treat 50 dB as the ceiling, not the starting point.

For more on whether nightly earplug use is safe, see our guide to sleeping with earplugs.

What White Noise Is and How Masking Works

White noise is broadband sound, meaning it plays across all audible frequencies at once, at a steady, unchanging level. That steadiness is what lets it mask other sounds instead of just adding to the noise.

White noise is similar to TV static or a running fan. The consistency is what makes it work. Masking happens when a steady sound covers up sudden noises, like a car door or a partner shifting in bed, so your brain has less to react to.

In a small study published in Sleep Medicine involving 10 participants residing in New York City's high-noise environment, white noise reduced the time it took them to fall asleep and the amount of time they spent awake during the night.⁽⁶⁾ Beyond environmental noise, using white noise for tinnitus relief works for some people by masking the ringing with a steadier, more tolerable sound.

Whether you're trying to block out city traffic or calm ringing ears, these white noise benefits all rely on the same science of auditory masking.

Does the Color of Noise Change the Right Volume?

The 40 to 50 dB range holds across the different kinds of colored noise, including white, pink and brown. The reasoning is the same: anything louder is adding more sound energy to the room than your ear actually needs for masking.

Pink noise sounds deeper and less harsh than white noise, closer to steady rainfall or gentle wind. Brown noise goes deeper still, more like a waterfall or ocean waves crashing. Both are often perceived as quieter than white noise at the same measured decibel level, because more of their energy is in lower frequencies your ear is less sensitive to.

Conclusion

The optimal white noise volume is a range of 40 to 50 dB for better sleep, measured near your head. The higher 50 to 70 dB range comes from hearing-safety regulation, not sleep research. The most recent trial found that the higher range can cost you REM sleep instead of protecting it.

Start at a low volume and use the ignorability test. If background noise still gets through at 50 dB, move the speaker closer to the noise source or add earplugs before you turn up the volume.

Manta White Noise Machine is built to mask well at the volume that's actually good for you, so you don't have to choose between hearing your alarm and getting the good sleep you're aiming for.

Frequently Asked Questions

Is 60 Decibels Too Loud for White Noise?

Yes, for most sleepers. Sixty decibels sits above every level used in trials that showed a sleep benefit. Aim for 40 to 50 decibels instead. Use the ignorability test to confirm that you're in the right range. The test is simple: if you can't easily ignore the white noise once you're settled in, it's too loud.

Can White Noise Damage Your Hearing?

No, not at sleep-appropriate volumes. Hearing risk starts around 70 dB in a 24-hour average, which is well above the 40 to 50 dB range recommended for sleep. The reason to stay in that lower range is sleep quality, not hearing damage.

Should White Noise Be Louder Than the Noise You Are Blocking?

Not exactly. White noise shouldn't overpower the entire room. It needs to sit above the disruptive sound at your ear. Moving the speaker closer to the noise source improves that ratio without raising the overall volume, which is usually the better first move.

Is It Okay to Sleep with White Noise on All Night?

For most people, at 40 to 50 decibels, yes. Many prefer a white noise device with a timer option instead of noise running until morning. If you have tinnitus or hyperacusis, determine the correct sound levels with your doctor before making it a nightly habit.

How Do I Measure the Decibel Level in My Bedroom?

A free phone app, like NIOSH Sound Level Meter or Decibel X, held near your pillow with the machine running, will give you a reading. It's optional. The ignorability test (whether you can easily ignore the sound once you're settled) gives most people the same answer without an app.

Sources:  

(1) Basner, M., Smith, M. G., Cordoza, M., Kayser, M. S., Carlin, M., Ecker, A. J., Gilad, Y., Park-Chavar, S., Rennie, K., Schneller, V., Walsh, S., Shou, H., Cao, Q., Younes, M., Aeschbach, D., & Jones, C. W. “Efficacy of pink noise and earplugs for mitigating the effects of intermittent environmental noise exposure on sleep.” SLEEP, academic.oup.com/sleep/advance-article/doi/10.1093/sleep/zsag001/8452884. Accessed 12 August 2026.

(2) Messineo, L., Taranto-Montemurro, L., Sands, S. A., Oliveira Marques, M. D., Azabarzin, A., & Wellman, D. A. “Broadband Sound Administration Improves Sleep Onset Latency in Healthy Subjects in a Model of Transient Insomnia.” Frontiers in Neurology, www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2017.00718/full. Accessed 12 August 2026.

(3) Mousavi, S. A. V., Salehian, M., & Mazlom, S. R. “The effect of white noise on sleep quality and fatigue in community-dwelling older adults: a randomized controlled trial.” BMC Geriatrics, link.springer.com/article/10.1186/s12877-026-07311-2. Accessed 12 August 2026.

(4) Fink, D. J. “What Is a Safe Noise Level for the Public?” American Journal of Public Health, ajph.aphapublications.org/doi/10.2105/AJPH.2016.303527. Accessed 12 August 2026.

(5) World Health Organization. “Noise.” World Health Organization, www.who.int/europe/news-room/fact-sheets/item/noise. Accessed 12 August 2026.

(6) Ebben, M. R., Yan, P., & Krieger, A. C. “The effects of white noise on sleep and duration in individuals living in a high noise environment in New York City.” Sleep Medicine, www.sciencedirect.com/science/article/abs/pii/S1389945721002021. Accessed 12 August 2026.

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