How Loud Should White Noise Be?
Noise only needs to be loud enough to blur the sounds you want to cover. Most people use far more volume than they need, especially at night. Here are practical targets, and how to check them.
Quick targets
| Use | Target level | Feels like |
|---|---|---|
| Adult sleep | 40 to 50 dB at the pillow | Light rain, a quiet library |
| Baby sleep | About 50 dB at the crib, source 2 m away | A soft shower in the next room |
| Focus and study (speaker) | 45 to 55 dB | A quiet office hum |
| Focus with headphones | Lowest level that hides speech | Comfortable for hours |
| Tinnitus comfort | Just below your tinnitus | Tinnitus still faintly audible |
Decibels in everyday terms
Decibels are logarithmic: every 10 dB increase sounds roughly twice as loud and carries ten times the energy. A whisper is around 30 dB, a quiet room 35 to 40 dB, normal conversation about 60 dB, a vacuum cleaner 70 to 75 dB and heavy traffic 85 dB.
For all-night listening, hearing experts generally advise staying well below 70 dB. Workplace rules use 85 dB averaged over 8 hours as the point where hearing protection is required; NIOSH recommends that as the limit, halving the safe time for every 3 dB above it. The World Health Organization’s safe listening guidance for personal audio is built on similar weekly limits.
How to measure your level
- Install a free sound meter app. The NIOSH Sound Level Meter app for iPhone is well regarded; Android has several decent options.
- Play your noise at its usual volume.
- Hold the phone where your head (or your baby’s head) will be, and note the A-weighted reading (dBA).
- Adjust until it sits in the target range. Phone meters are not lab instruments, but they are accurate enough for this.
Simple rules without a meter
- You should be able to talk over it at a normal voice from across the room.
- If it still feels loud after a few minutes lying still, turn it down.
- Your ears should never ring or feel full afterwards.
- With headphones, if someone next to you can hear it, it is too loud.
- Start low and creep up, rather than starting loud and coming down; your ears adapt and you will overshoot.
Why the color matters for loudness
At the same meter reading, white noise sounds louder and harsher than brown noise, because more of its energy sits in the 2,000 to 5,000 Hz range the ear is most sensitive to. A deeper color lets you cover the same sounds with less perceived loudness. The generator also balances its colors so switching between them does not cause a big jump.
Frequently asked questions
What decibel level is safe for sleeping with white noise?
Around 40 to 50 dB at your pillow is plenty for most people. Stay well below 70 dB for all-night use.
Can white noise damage hearing?
Only if it is loud for long periods. At sleep-friendly levels of 40 to 50 dB there is no evidence of harm.
Is it safe to sleep with headphones playing noise?
At a low volume, many people do. Use comfortable sleep headphones, keep the level low and consider a timer. Speakers across the room are gentler on the ears.