--- title: "Is It Bad to Sleep With White Noise Every Night?" description: "For most adults it is not bad at a low volume. A sleep study used about 46 dB, well under the 80 dB where hearing risk starts. Use a timer." url: https://shimmr.app/learn/sleeping-with-white-noise/ --- - [Learn](https://shimmr.app/learn/) - [Sleep](https://shimmr.app/learn/sleep/) # Is it bad to sleep with white noise every night? For most adults it is not bad at a low volume. A sleep study used about 46 dB, well under the 80 dB where hearing risk starts. Use a timer. The Shimmr team Published Oct 31, 2026 4 min read - **Short answer:** for most adults, sleeping with white noise is not known to be harmful when it is quiet, but the evidence that it improves sleep is weak. - **Evidence:** a 2021 systematic review of 38 studies rated the evidence that continuous noise improves sleep as very low quality, and warned it may also affect sleep and hearing. - **Falling asleep:** in a 2017 study of 18 healthy adults, steady broadband sound at about 46 dB cut the time to reach stage 2 sleep by a median of 38%. - **Hearing:** the WHO says sound below 80 dB is unlikely to damage hearing, and normal conversation, about 60 dB, is safe for unlimited time. - **Best habit:** keep the noise as quiet as you can while it still covers the sounds that wake you, and let a sleep timer fade it out instead of playing all night. Hear it Is it bad to sleep with white noise? For most adults, no, as long as it is quiet. White noise is a steady hiss that mixes every pitch at the same strength, like a radio between stations. It does not appear to harm healthy adults at a low volume, but the research that it improves sleep is thin. Here is what the studies say about sleep, hearing and habit, and how to use it well. ## Is it bad to sleep with white noise every night? Sleeping with white noise every night is not known to be harmful for adults when the volume stays low. The honest problem is the other side: there is little good proof that it helps. A [2021 systematic review](https://doi.org/10.1016/j.smrv.2020.101385) looked at 38 studies of continuous white noise or similar broadband noise and sleep. Results went both ways: some found noise helped, some found it disturbed sleep. Using the GRADE system, a standard way to rate evidence, the authors judged the quality of evidence that continuous noise improves sleep as very low. They also noted that noise may affect sleep and hearing, and asked for better research before promoting it as a sleep aid. So a nightly white noise habit is not dangerous by default. It is just not the proven sleep fix it is often sold as. ## Does white noise help you fall asleep? It may help some people fall asleep faster, especially in a noisy or unfamiliar place. A [2017 randomised trial](https://doi.org/10.3389/fneur.2017.00718) studied 18 healthy adults over two nights in a sleep lab. To mimic a bad night, they went to bed 90 minutes earlier than usual. On one night the room had normal background sound, about 40 dB. On the other, two speakers played steady broadband sound at about 46 dB. With the broadband sound, people reached stage 2 sleep, the first stage of proper light sleep, faster: a median reduction of 38%. In a smaller group who already had trouble falling asleep at home, sleep quality and the number of arousals also improved. That is one small study of young, healthy people, so it is a hint, not a promise. ## Why does white noise block out sounds? White noise works by masking: it fills the quiet, so a sudden sound stands out less. What wakes you is often not how loud a noise is, but how much louder it is than the background. A [2005 sleep study](https://doi.org/10.1016/j.sleep.2004.12.004) showed this with recorded hospital noise. It was tiny, only five people, but the result is clear: | Night | Arousals per hour | | --- | --- | | Quiet baseline | 13.3 | | Recorded hospital noise | 48.4 | | Hospital noise plus white noise | 15.7 | The researchers found that the jump from background to peak, not the peak itself, decided whether someone woke. White noise raised the background, so the jumps got smaller. This is why noise can help with traffic, neighbours or a [partner who snores](https://shimmr.app/learn/snoring-partner/). ## Can white noise damage your hearing? At a quiet bedroom level, white noise is very unlikely to damage your hearing. The [World Health Organization](https://www.who.int/news-room/questions-and-answers/item/deafness-and-hearing-loss-safe-listening) says sound below 80 dB is unlikely to cause hearing damage, and lists these safe listening times: - **40 dB** (a library): unlimited - **60 dB** (normal conversation): unlimited - **80 dB** (a doorbell): 40 hours a week - **90 dB** (shouting): 4 hours a week The sound in the 2017 study was about 46 dB, far below the risky range. The danger comes from turning it up to drown out everything. With headphones or sleep buds, the WHO advises keeping your device at no more than 60% of its maximum volume. If your ears ring in the morning, it was too loud. ## Can white noise affect your deep sleep? It might, which is one reason to keep it low and let it fade. The 2021 review warned that continuous noise may also negatively affect sleep, not only help it. A recent lab study also found that steady pink noise at bedroom levels reduced REM sleep, the dreaming stage; we cover it in [pink noise for sleep](https://shimmr.app/learn/pink-noise-for-sleep/). Your brain still hears while you sleep. Hours of sound may be more than you need if the noise only has to cover the moment you drift off. A sleep timer that fades the noise out after you fall asleep gives you the masking when it matters and quiet for the rest of the night. If something often wakes you later, like early traffic, leaving it on low may be worth it. ## How do you sleep with white noise the right way? Use the lowest volume that still covers the sounds that bother you, and let it fade out on a timer. A few simple habits: 1. **Turn it down.** Start low and raise it only until the problem sound fades into the background. 2. **Keep the speaker off your pillow.** A little distance means the sound is not loudest right at your ear. 3. **Try a deeper colour.** Pink and brown noise put more energy into low sounds and less into hiss. Many people find them softer; see [brown noise vs white noise](https://shimmr.app/learn/brown-noise-vs-white-noise/). 4. **Use a timer.** Let the sound fade after you are likely asleep, and keep it on all night only if late noises wake you. 5. **Check how you feel.** If you sleep worse or wake tired, try a few nights without it. In Shimmr, white, pink and brown noise are in the library. You can play noise on its own or layer it quietly under a session in the mixer, and the sleep timer fades it out. It keeps playing with the screen off. - [White noise app White noise, without the ads. And without needing a signal.](https://shimmr.app/white-noise-app/) In the app White Noise ยท with a sleep timer that fades out Play white, pink or brown noise from the library, on its own or quietly under another session, and let the sleep timer fade it out so it does not run all night. ## Common questions **Is it bad to sleep with white noise every night?** For most adults it is not known to be harmful if the volume is low. The bigger question is whether it helps: a 2021 review of 38 studies rated that evidence as very low quality, so treat it as a tool for masking sounds, not a cure. **Can white noise damage your hearing while you sleep?** Not at a quiet bedroom level. The WHO says sound below 80 dB is unlikely to cause hearing damage, and the steady sound in a 2017 sleep study was about 46 dB, softer than normal conversation. **Can you become dependent on white noise to sleep?** It can become a habit, the way a fan or a certain pillow does, and a silent room may feel strange at first. If you want to stop, lower the volume over a week or two, or let a timer fade it out a little earlier each night. **Should white noise run all night or on a timer?** A timer is the safer default. Noise helps most while you fall asleep and when a sudden sound might wake you, and a timer that fades out cuts the hours of sound your ears and brain take in. **Is white, pink or brown noise better for sleep?** No colour has been shown to be best. Pink and brown sound softer and deeper than white noise, so many people find them easier to sleep with at a low volume. Keep reading - [Guides Brown noise vs white noise (and pink and green): which to use](https://shimmr.app/learn/brown-noise-vs-white-noise/) - [Sleep Pink noise for sleep: what the studies really show and how loud to play it](https://shimmr.app/learn/pink-noise-for-sleep/) - [Sleep How to sleep with a snoring partner: what actually helps](https://shimmr.app/learn/snoring-partner/) This article is for general information and is not medical advice. Binaural beats are not a treatment for insomnia or any other condition.