Bachon Ki Sehat

White Noise for Babies: Is It Safe, and How Loud Is Too Loud?

By Saba 7 min read

White noise may help some babies settle, and volume and distance from the crib are the controls you can set, whichever machine or app you use. This guide covers how loud is too loud, where the machine should go, what the 2014 safety tests found, and how the age bands change the daily plan.

White noise for babies at a glance

What it is: a steady sound, such as a fan, a shush or soft rain, played at a low, set level
Loudest tested: three of 14 infant machines went above 85 A-weighted decibels at maximum volume
Placement: across the room, more than 2 metres from the cot
Benefit: the sources checked here include no trial of benefit for infants, so treat any help as a possibility
The line to remember: distance and a low setting are what you control, whatever is on the box.

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Age bands used in this guide: under 6 months, 6 to 12 months, 1 to 3 years, 3 to 6 years, and over 6. The volume and placement rules are the same in every band. No age to stop was confirmed in the sources checked, so plan that with your paediatrician.

Is white noise safe for a baby?

It can be, if the sound stays low and the machine sits well away from the cot. In 2014 researchers tested 14 infant sleep machines at their maximum volume and measured the sound at 30, 100 and 200 centimetres. Every machine went above 50 A-weighted decibels at 30 centimetres, a level the authors set against the recommended limit for infants in hospital nurseries. Three machines went above 85 decibels, and the authors note that playing one at that level for more than eight hours would exceed occupational limits for adults and risk noise-induced hearing loss.

CHOP’s summary of the same work adds that all but one machine still exceeded the nursery reference at 200 centimetres, which is why distance matters so much.

How loud is too loud for a baby’s cot?

Keep the sound low enough that it sits in the background rather than filling the room. The 50 decibel figure is a hospital nursery reference, not a home rule, but it gives you a sense of scale. Labels can mislead, so judge by what you hear at the cot rather than by the number on the dial.

Check it where the head will be

Stand where the baby’s head would lie. If the sound is loud enough that you would need to raise your voice to talk over it, turn it down. A phone sound meter app gives only a rough reading, but it can show a large difference between the cot and the far wall.

Where should the white noise machine go?

Put it across the room. Aim for more than 2 metres, about 7 feet, from the cot. CHOP advises more than 200 centimetres from the crib and keeping the volume low.
Never on the cot rail or inside the cot. Keep cords out of reach of the baby and of older siblings.
Start at the lowest setting. Raise it only if the room noise is still masking poorly, and never to the top of the dial.
Choose a steady sound. A constant fan or hush is easier to keep low than thunder, waves or a sound that spikes.
Check once a week. A machine can be moved or the setting bumped, so measure or listen again at the cot.

How long should a baby use white noise each night?

A 2023 American Academy of Pediatrics recommendation, as WebMD reported it in 2024, says white noise machines should be as far from the infant as possible, set to the lowest setting possible, and used for as short a time as possible. That points toward using the sound to help a baby settle, then turning it down or off, rather than running it all night at one level. Ask your paediatrician about the timing for your baby.

Who needs extra care with white noise?

Premature babies and babies with a known hearing concern need guidance from a paediatrician or audiologist before you start. CHOP notes that nightly exposure could affect hearing, speech and language development, and that continual use could damage hearing and hamper auditory development. A low, steady, distant sound is the safer end of the range, but it does not replace a hearing check.

Does white noise help a baby sleep longer?

The sources checked here include no trial that tests whether white noise helps babies sleep longer, so treat any benefit as a possibility rather than a promise. Some parents find a steady sound helps their baby settle at bedtime or after a noisy wake up. White noise is not a treatment for colic, reflux or a sleep problem that does not ease with a steady routine, and crying that is new, long or unusual needs a check, not a louder machine.

Safe sleep comes first, whatever sound is playing. The baby sleeps on the back, flat, in a bare cot. The baby sleep schedule by month sets out naps and night sleep by age, and the winter layers guide covers overheating, which matters more than any sound. For adult sound choices between fan, rain and silence, read the fan sound guide. The rest of the children’s guides sit in the Bachon Ki Sehat hub, and the bedtime hub is Sleep & Relaxation.

Worth knowing first

Machines differ a lot, and three tested in 2014 went above 85 decibels at maximum volume. Keep the cot bare: no soft objects, toys, bumpers or loose bedding, and nothing hung near the baby. Talk to a paediatrician or audiologist first if the baby was born early or has a hearing concern. Call 111 today for a temperature of 38C or higher in a baby under 3 months. Call 999 for difficult breathing, a baby who is drowsy and hard to wake, or a first fit.

White noise questions for baby sleep, answered

Is white noise safe for babies?

It can be, if the sound stays low and the machine sits well away from the cot. The 2014 tests found every machine above the hospital nursery limit at 30 centimetres, so distance and a low setting are the main controls parents have.

Is white noise bad for babies?

The main concern is loudness over time. CHOP notes that nightly exposure could affect hearing, speech and language development, so keep the sound low, use it for settling where you can, and turn it off or down as the baby grows.

How loud should white noise be for a baby?

Keep it low, at the cot where the baby sleeps. The 50 A-weighted decibel figure is a hospital nursery reference, and every machine tested in 2014 went above it at 30 centimetres on maximum. Check by listening at the baby’s head, not from across the room.

Where should a white noise machine go?

Across the room, more than 2 metres from the cot, never on the rail and never inside it. CHOP advises keeping the volume low at that distance.

Does white noise help babies sleep?

Some parents find it helps their baby settle, but the sources checked here include no trial of benefit for infants. Treat it as an optional aid that comes with volume and safety rules, not a sleep solution.

When should I start using white noise for my baby?

The sources checked here do not set an age to start. A premature baby, or a baby with a hearing concern, should have advice from a paediatrician or audiologist before any use.

Will my baby need white noise forever?

There is no age to stop in the sources checked here. A gradual plan works well: lower the volume, use the sound for settling only, then stop once the routine holds. Your paediatrician can set the timing.

Can white noise stop a baby crying?

It may help a baby settle, but crying always has a cause worth checking. Hunger, a wet nappy, heat, reflux or illness need attention first, and new, long or unusual crying needs a doctor.

Can loud white noise damage a newborn’s hearing?

Sustained loud sound can. Tests in 2014 found three machines above 85 decibels at maximum volume, so keep the volume low, place the machine across the room, and ask for a hearing check if you have any worry.

Sources

Nothing on The Care Online is medical advice. Traditional practices are described as tradition, not as fact. Patch-test anything new, and take a persistent or serious concern to a qualified professional. See how posts are written on our methodology page.