Does white noise actually help babies sleep?

For many babies, yes. A steady, low background sound resembles the constant whoosh they heard in the womb, can be soothing, and can mask sudden household noises that would otherwise startle a baby awake. It doesn't work for every baby, and it isn't a substitute for safe-sleep basics — but it's a low-cost thing to try.

How loud should white noise be for a baby?

Keep it moderate — roughly conversational level, around 50 dB, and well below about 85 dB. A useful test: if you have to raise your voice to be heard over it, it's too loud. Place the machine across the room, at least about 2 metres (around 7 feet) from the crib, rather than right beside the baby's head.

Is it safe to run white noise all night?

It's generally fine to use white noise to settle a baby, but many experts suggest not running it loudly all night long, every night. A common approach is to use it to fall asleep and rely on a sleep timer, keeping the volume moderate and the machine away from the crib. If you have any concern about your baby's hearing or sleep, ask your paediatrician.

White noise for babies: does it help, and is it safe?

If you've ever shushed your baby to sleep, run a tap, or stood next to the exhaust fan, you've already discovered white noise. Here's why a steady background sound can settle a newborn, how to use it safely, and the myths worth ignoring.

By the Oh My Baby team — parents who built a baby tracker for our own daughter · Updated 22 May 2026. This is not medical advice — for concerns about your baby's sleep or hearing, ask your paediatrician.

Does white noise help babies sleep?

For a lot of babies, yes. A steady, unchanging sound does two useful things. First, it's familiar — and second, it masks the sudden noises (a door, a sibling, a car horn) that would otherwise jolt a lightly-sleeping baby awake. That's why so many parents stumble onto it by accident with the hairdryer or the kitchen fan.

It's not magic and it doesn't work for every baby. White noise won't override hunger, a dirty diaper, or the simple fact that newborns wake often. But as a gentle settling tool, it's cheap, low-risk when used sensibly, and worth a try.

The science: why womb-like sound soothes

The womb is not a quiet place. Blood flow, the mother's heartbeat, and muffled outside sound create a constant whooshing that's surprisingly loud. A newborn has spent months in that environment, so total silence can feel unfamiliar and unsettling. A soft, continuous sound — rain, a fan, a heartbeat, or plain white noise — recreates a slice of that comfort, which is part of why "shushing" is a near-universal parenting instinct.

Types of sounds

Sound	What it's like
White noise	Equal energy across frequencies — a flat "shhh", like untuned static.
Pink noise	Softer and deeper than white noise, with more low tones — often described as more "natural", like steady rain.
Brown noise	Deeper still, with the most low-frequency energy — a low rumble, like a distant waterfall.
Ambient sounds	Rain, ocean waves, a fan, or a womb-heartbeat — gentle, familiar textures rather than pure noise.

There's no single "best" sound — babies have preferences just like adults. Many parents try a couple and keep whichever settles their baby fastest.

White noise, built in. Oh My Baby includes a free, no-ads sound player with generated white, pink, and brown noise plus rain, ocean, fan, and a womb-heartbeat. There's a sleep timer (15 / 30 / 60 minutes or infinite) and volume control, and on iOS it keeps playing in the background with the screen off — so you can settle the baby and put the phone down.

Using white noise safely

Sound machines are safe for babies when used sensibly — the key things to get right are volume, distance, and duration. Loud, close, all-night noise is the scenario experts caution against.

Keep the volume moderate — around conversational level (roughly 50 dB) and well below about 85 dB. If you'd have to raise your voice to be heard over it, it's too loud.
Keep your distance — place the machine or phone across the room, at least about 2 metres (around 7 feet) from the crib, never right beside the baby's head.
Don't blast it all night — using it to settle, then letting a sleep timer fade it out, is a sensible default rather than maximum volume until morning.
The "arm's-length" check — if it sounds loud to you from where the baby lies, turn it down.

Sound never replaces safe sleep. The basics still apply: baby on their back, on a firm flat surface, in their own clear sleep space, with no loose bedding. White noise is a settling aid, not a safety device.

Common myths

"My baby will be addicted to it." Plenty of babies use white noise for months and then drop it without drama as they get older. If you'd like to wean off, gradually lower the volume over several nights.
"Louder works better." The opposite — moderate volume soothes; loud volume is the part to be careful about. More is not better here.
"It'll damage hearing." Used at moderate volume and a sensible distance, this is not a typical concern. The caution is specifically about loud, close, continuous use — which is easy to avoid.
"It works for every baby." Some babies love it, some are indifferent. If yours isn't soothed after a fair try, it's fine to stop.

How to introduce it — and when to wean off

You don't need a special routine. Try white noise as part of the wind-down for naps and bedtime: settle the baby, start the sound at a moderate volume from across the room, and let it run while they fall asleep. A sleep timer that fades the sound after 15 to 60 minutes is a tidy way to use it without leaving it on all night. If your baby startles at the first burst of sound, start it before you pick them up so it's already part of the background, not a surprise.

Consistency is what makes any sleep cue work. Using the same sound for naps and nights gives your baby a gentle, repeatable signal that it's time to rest — useful when you travel, too, since a familiar sound can make a strange hotel room feel a little more like home.

There's no rush to drop white noise, and many families simply use it for as long as it helps. If you do want to wean off — say your toddler no longer seems to need it — lower the volume a little each night over a week or two until the room is quiet. Doing it gradually avoids a jarring change and tends to go unnoticed.

A quick checklist

Volume moderate — around 50 dB, well below ~85 dB; turn it down if it sounds loud from the crib.
Machine or phone at least ~2 m (about 7 ft) from where the baby sleeps.
Use a sleep timer rather than blasting it all night.
Safe-sleep basics first: back, firm flat surface, clear space.
Try a couple of sounds and keep whichever settles your baby — and stop if it doesn't help.

Calming sounds, free and built in

White, pink, and brown noise plus rain, ocean, fan, and womb-heartbeat — with a sleep timer and background playback on iPhone. Settle the baby, set the timer, put the phone down. No ads, no paywall.

start tracking free

free forever · no ads · private to your family · no app to install

About the authors

Oh My Baby is built by two parents who created a free, private baby tracker after our own daughter's early weeks. We compile these guides from public health sources and our lived experience — and we always point you back to your paediatrician for medical decisions.

Related guides

This is general information, not medical advice. Babies vary, and safe-sleep guidance should always come first. For any concern about your baby's sleep, hearing, or development, please consult your paediatrician.