White Noise for Baby Sleep

White noise — a steady, unstructured sound like rain, static, or a fan — can help some babies settle by masking the sudden household sounds that startle them awake and by recreating the constant whooshing they heard in the womb. It doesn't work for every baby, and it isn't magic, but for many families it's a simple, effective part of the sleep routine. The key is using it safely, because the main risk with white noise is volume.

This guidance is general and practical, not medical. If you have specific concerns about your baby's hearing or sleep, talk to your pediatrician.

How loud is too loud

This is the safety heart of the topic. A baby's hearing is delicate, and a machine running loud all night, close to the crib, can be too much sound exposure. The common, conservative advice is to keep white noise at a moderate volume— think about as loud as a soft shower, not a roar — and no louder than needed to take the edge off household noise. If you have to raise your voice to talk over it near the crib, it's too loud. Turning it down is almost always the safer choice.

Distance matters as much as volume

Keep the machine away from the crib, not right next to your baby's head — across the room is a good default. Distance drops the sound level reaching your baby significantly, so a machine placed several feet away at a modest volume is gentler on their ears than one on the crib rail. Between volume and placement, err toward quieter and farther.

Continuous or timed?

Some parents run white noise continuously through sleep; others use a timer that fades it out after the baby settles. Both are fine. A steady, continuous sound is more consistent if your baby wakes easily to silence, while a timer avoids all-night exposure if you'd rather limit it. Avoid tracks with sudden loud peaks or music with jarring changes — the point is a steady, boring sound.

Don't let it replace safe sleep

White noise is a comfort tool, not a safety device, and it changes none of the safe-sleep rules: your baby still sleeps on their back, on a firm flat surface, in an empty crib. Keep the cord of any plug-in machine well out of the crib and away from where your baby could reach it, since cords are a strangulation hazard. Never place the machine in the crib. For the full sleep-setup picture, see our safe-sleep guidelines and our guide to TOG and room temperature.

Is it a bad habit?

Parents often worry white noise becomes a crutch. In practice it's an easy association to keep or wean whenever you choose — it travels well, and you can phase it out gradually by lowering the volume over time if you'd like. There's no urgency to drop it; plenty of families use it for years without issue. Use it if it helps your baby, skip it if it doesn't, and keep it at a safe, moderate volume either way.