White Noise Generator

Play white noise online for free with a steady, customizable generator. White noise is the classic sound masking solution - a consistent hiss that contains all audible frequencies at equal intensity. It effectively masks sudden sounds and creates a neutral audio backdrop for sleep, focus, or relaxation.

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Infant listening-safety source review

Safety and evidence

Sources reviewed July 17, 2026

Sound may mask household noise, but it is not guaranteed to settle a baby or extend sleep. Infant hearing deserves extra caution because app and device sliders do not show the sound level at the crib.

Keep the speaker well away from the baby, use the lowest practical volume, and limit duration rather than assuming continuous use is harmless. Ask your pediatrician about your baby's individual needs.

Official sources

How Noise Affects Children
American Academy of Pediatrics / HealthyChildren.org. Infant sleep machines can be hazardous when too loud or too close; use them farther away and for a limited time.
AAP Sounds the Alarm on Excessive Noise and Risks to Children
American Academy of Pediatrics / HealthyChildren.org. Both loudness and listening duration contribute to hearing risk.
Safe listening devices and systems: a WHO-ITU standard
World Health Organization. Device-level guidance for safer listening, including separate limits for children.

Reviewed by the AmbientNoise.io editorial team. This is a non-clinical source review; no medical professional is represented as having reviewed this page. See our editorial policy.

What is White Noise?

White noise contains all frequencies in the audible spectrum at equal intensity, similar to how white light contains all colors. It sounds like a steady hiss or static. The term comes from the analogy to white light, which contains all visible wavelengths. This full-spectrum coverage makes it excellent for masking a wide variety of sounds.

White Noise Online Free

Use this page as a free online white noise machine in any modern browser. Start the generator, set a comfortable volume, then add a sleep timer or mix in rain, fan noise, or brown noise if pure static feels too sharp.

White Noise for Babies

Some families use white noise to mask household sounds around sleep. The American Academy of Pediatrics warns that infant sleep machines can be hazardous when they are too loud or too close. Keep the source well away from the baby, choose the lowest practical volume, and limit duration rather than relying on a percentage slider or assuming continuous use is harmless.

White Noise for Sleep

White noise can mask sudden sounds such as doors closing, traffic, or movement. Some listeners find that steadier background useful at bedtime, while others prefer silence or a softer noise color. It is not guaranteed to improve sleep.

White Noise for Tinnitus

White noise may reduce the contrast that makes tinnitus stand out in quiet environments. The NIDCD notes that sound generators may mask or distract from tinnitus, but they do not cure it. Use a comfortable level and seek medical advice for new or concerning symptoms.

Benefits

Masks sudden noises that could wake you up
Can mask household sound around baby sleep when used cautiously
Used in offices to increase speech privacy
May make tinnitus less noticeable while the sound plays
Creates consistent background for focus
Full-spectrum coverage masks wide variety of sounds

Common Uses

Caregiver-supervised sound masking around baby sleep

Office privacy and concentration

Studying in noisy environments

Tinnitus masking in quiet rooms

Sound masking in apartments

Sleep aid for light sleepers

Frequently Asked Questions

Is white noise safe for babies?

Infant hearing warrants extra caution. The American Academy of Pediatrics advises keeping sleep machines far from an infant, using a low volume, and limiting duration. This player cannot measure the sound level at the crib, so ask your pediatrician about individual needs rather than treating its slider as a safety reading.

Can white noise damage hearing?

Any sound can contribute to hearing damage when it is loud enough for long enough. Use the lowest comfortable level, take breaks during prolonged listening, and lower it if you need to raise your voice over the sound.

How loud should white noise be for sleep?

Use the lowest volume that masks the disturbance without demanding attention. A website slider cannot show the decibel level at your ears; accurate measurement requires appropriate equipment and depends on the device, speaker distance, and room.

Is white noise or brown noise better?

Neither is objectively better - they're different. White noise has more high-frequency content and sounds like static, while brown noise emphasizes lower frequencies for a deeper rumble. Many people prefer brown noise for sleep because it's less "hissy."

Can babies become dependent on white noise?

A repeated bedtime sound can become a sleep association. Evidence does not support a promise that this is always harmless or helpful, so use it cautiously and discuss sleep or hearing concerns with your pediatrician. If you stop, reduce the sound gradually if that works for your family.

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