Do White Noise Machines Help Babies Sleep? (And How to Choose One)

Newborns spent nine months next to a loud whooshing heartbeat, so a silent nursery can feel unsettling to them. That’s the idea behind white noise: it recreates the constant, muffled hum of the womb and can help some babies settle and stay asleep through household clatter.

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Does it actually work?

For many babies, yes — a steady sound masks sudden noises (a door, a dog, an older sibling) that would otherwise jolt them awake. It won’t fix an overtired or hungry baby, and not every child responds. But as a low-cost, low-effort tool, it’s one of the more reliable sleep aids going.

Using it safely

Two things matter more than which machine you buy:

• Keep the volume down. Place the machine across the room, not next to the crib, and keep it at a soft level — roughly the loudness of a quiet shower, no louder. Loud, close, all-night sound isn’t good for tiny ears.
• Don’t rely on it being loud to “win.” If you’re raising the volume to drown out crying, that’s a cue to check on your baby, not to turn it up.

What to look for

• A true continuous sound, not a short loop that resets with a click every 30 seconds.
• Simple volume control and, ideally, no auto-off timer (or an optional one) so it doesn’t cut out mid-nap.
• Portability and battery option if you’ll use it for travel or the pram.
• Skip the extras you won’t use — projectors, night lights and app control add cost and, sometimes, distraction.

The honest budget take

A basic, well-reviewed sound machine does the job as well as a premium one for most families. Even a fan or a free white-noise track can work in a pinch. Spend the least that gets you a steady sound and easy volume control, and put the savings toward something you’ll use more.

Try it for a week or two. If your baby settles faster, you’ve found a keeper. If not, you’ve lost very little — every baby is different.