Decibel Chart of Common Sounds: Whisper to Jet Engine

A whisper is around 30 dB, normal conversation runs 60 to 70 dBA, heavy traffic reaches about 85 dB, and concerts, sirens and fireworks go well past 100. The number that matters most is 85 dBA. Below about 70 dBA, sound is unlikely to damage hearing even after hours. From 85 dBA up, the louder it gets, the less time it takes to cause harm.

The chart below puts common sounds in order, then explains how to read it and why two charts rarely agree on the exact number.

Decibel chart of common sounds #

Levels are typical A-weighted values at a normal listening distance. The ranges marked with an asterisk come from the National Institute on Deafness and Other Communication Disorders (NIDCD). The others are common reference values, the same ones Sound Meter dB uses for its built-in comparisons.

“Hearing risk” here is about sustained exposure. A single thunderclap is not the same as standing next to a jackhammer for an afternoon.

How do you read a decibel chart? #

Decibels are logarithmic, so the numbers don’t work like a ruler. Three rules cover most of what you need:

• +3 dB doubles the sound energy. 88 dB carries twice the energy of 85 dB, which is why safe listening time halves with every 3 dB.
• +10 dB is ten times the energy and sounds roughly twice as loud to most people. A 70 dB restaurant feels about twice as loud as a 60 dB conversation.
• Two equal sources add 3 dB, not double the number. Two 80 dB machines side by side read about 83 dB. We walk through the math in how decibels add up.

Most charts, including this one, list A-weighted levels (dBA). A-weighting turns down very low and very high frequencies the way your ear does, so the number tracks how loud something sounds. If you want the details, see dB vs dBA.

At what decibel level does hearing damage start? #

NIDCD says sounds at or below 70 dBA are unlikely to cause hearing loss, even after long exposure, while long or repeated exposure at 85 dBA or above can cause permanent damage. The NIOSH recommended exposure limit is 85 dBA averaged over an 8-hour workday. For every 3 dB above that, NIOSH recommends cutting the time in half.

Those times assume the rest of your day is quiet. An hour at a 94 dB gym class uses up the whole day’s allowance, so a loud commute afterward adds to the total. The NIOSH figure is a workplace recommendation designed to protect most workers, and some people are more sensitive than average. It is not a guarantee. OSHA’s legal limit for employers is looser, at 90 dBA with a 5 dB exchange rate; we compare the two in NIOSH vs OSHA noise limits.

Why do decibel charts disagree? #

You’ll see a lawn mower listed at 85 dB on one chart and 95 on another. Usually both are right, for different conditions.

Distance. Sound from a single source drops about 6 dB each time you double your distance from it. A mower measured at the handle reads higher than one measured from the porch. See how sound decreases with distance.

The model and the setting. A new electric mower and a 20-year-old gas one are not the same machine. A blender on low isn’t a blender on crush.

Average versus peak. Some charts list the average level (Leq), others the loudest moment. A slammed door might average 60 dB over a minute but peak far higher. A good meter shows both.

Weighting. A flat (Z-weighted) reading of a rumbling truck will be noticeably higher than the A-weighted one, because A-weighting discounts the bass.

So read a chart as a guide to the neighborhood a sound lives in, not an exact figure. If a specific sound matters to you, such as your shop vac, your kid’s toy or the bar downstairs, measure it where you actually are.

How can you measure the sounds around you? #

A phone can give you a useful estimate in seconds. Sound Meter dB turns your phone’s microphone into a live meter. The dial runs 0 to 120 dB in eight color zones, and every reading gets a plain-English label and a comparison (“vacuum cleaner”, “rock concert”) drawn from a chart like the one above. It reads in A-weighted dBA by default, shows min, max and Leq for the session, and tells you how long the current level is safe for under the NIOSH guideline. The same chart and the daily exposure table are built into the app’s reference screen.

Phone microphones aren’t calibrated instruments, so treat the result as a good estimate rather than a certified measurement. Our guide to how accurate phone sound meters are covers what the research found and how to get closer readings. For step-by-step technique, see how to measure noise level with your phone.

Frequently asked questions #

How loud is normal conversation in decibels? #

NIDCD puts normal conversation at 60 to 70 dBA. A quiet chat across a table sits at the lower end. Several people talking over each other in a small room pushes toward 70.

Is 50 dB loud? #

No. 50 dB is about the level of a quiet office or a refrigerator’s hum. It’s noticeable in a silent bedroom but far below any hearing-risk level.

Is 90 dB loud enough to damage hearing? #

It can be, given enough time. Under the NIOSH guideline, 90 dBA is safe for about 2.5 hours a day. Beyond that the risk of permanent damage rises. That’s roughly a gas lawn mower or a motorcycle at close range.

What decibel level is painful? #

Pain usually starts somewhere around 120 dB and up, the range of sirens up close, thunderclaps and very loud concerts near the speakers. Damage can happen well below the pain threshold, though. Hearing loss from noise doesn’t have to hurt.

What should I do if my ears ring after a loud event? #

Ringing (tinnitus) or muffled hearing after noise means your ears were overexposed. It often fades within a day or two, but repeated episodes add up. If ringing or muffled hearing lasts, or you notice sudden hearing loss in one ear, see a doctor or audiologist promptly.