How Loud Should White Noise Be? A Volume Guide
Most people run masking sound louder than they need to. Effective white noise usually sits between 40 and 55 dB — about the level of soft rain — and the right setting is the quietest one that covers the sounds that actually bother you.
The Numbers That Matter
Decibels are easier with anchors: 30 dB is a whisper, 40 dB is a quiet library, 50 dB is light rainfall or a calm conversation, 60 dB is normal speech at close range. For overnight masking, a target of roughly 40 to 50 dB measured at your pillow covers most bedroom situations. For daytime focus in a noisy space, up to the mid-50s is reasonable.
For infants the ceiling is firmer — around 50 dB at the crib, with the source placed well away from the baby. That case has its own considerations, covered in our guide on white noise for babies and the white noise for babies page.
Sustained listening above roughly 70 dB is where hearing-safety guidance starts to apply for anyone, and masking sound never needs to get close to that. If your noise is approaching television volume, something else is wrong — usually a disturbance that volume alone cannot fix.
Your Phone Is a Good-Enough Meter
Free sound level meter apps use your phone's microphone to estimate dB, and while they are not lab instruments, they are accurate enough for this job — typically within a few decibels. The NIOSH Sound Level Meter app on iOS is a well-regarded free option; on Android, look for an app that reports A-weighted readings (shown as dBA), which approximate how human ears perceive loudness.
Measure where your head actually is: phone on the pillow, screen up, with the room otherwise as quiet as you can make it. Take the reading with your noise playing, note the number, then adjust. Distance matters enormously, so a speaker reading 60 dB at arm's length might be a comfortable 45 dB across the room.
Re-measure if anything changes — a new speaker, new furniture, moving the device. A one-minute check beats weeks of sleeping next to a sound that is quietly too loud.
The No-Equipment Calibration Trick
If you do not want to fuss with apps, use the conversation test. Set your mix playing, stand where you sleep or work, and have someone speak to you at normal volume from across the room — or play speech from another device as a stand-in. Raise your masking sound until the speech loses its crisp edges, then stop. If you have to strain to understand normal conversation, you have overshot; back off until speech is muffled but intelligible.
This works because conversational speech sits near the level of most disturbances you care about, so a sound that softens speech will soften the rest. It naturally lands most rooms in that 40-55 dB window without anyone reading a number.
A second habit worth keeping: set the volume in the evening, at the loudness you will actually sleep with, not in a noisy afternoon room. Ears adapt to context, and a level chosen at 2 p.m. almost always feels too loud at midnight.
White noise at a moderate masking level
⚪ White Noise
When Louder Is Not the Answer
If you keep nudging the volume up and the disturbance still cuts through, the problem is usually frequency, not level. Low rumble — traffic, footsteps overhead, HVAC — slips underneath bright white noise no matter how loud you make it. Switching to brown noise, which concentrates energy in the lows, often solves at a lower volume what white noise could not solve at a higher one.
The same logic runs the other way: if high-pitched sounds pierce a deep rumble, add a thin layer of white noise or pink noise on top rather than turning the whole mix up. Matching the masker to the disturbance is the entire game; the office noise blocker and sleep sounds pages have pre-balanced mixes built on that idea.
Quietest-that-works is the rule worth remembering. Masking sound succeeds when you forget it is playing, and that almost always happens at a lower volume than you would guess.