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How Loud Is Too Loud? A Friendly Guide to Decibels

Sound starts to become risky for your hearing at about 85 decibels (dBA), especially when you’re around it for a long time or again and again. Below about 70 dBA, everyday sound is unlikely to harm your hearing, according to the National Institute on Deafness and Other Communication Disorders (NIDCD). Above 85, the louder it gets, the less time it takes, so knowing roughly where your day sits on the decibel scale is one of the easiest ways to look after your ears.

Quick answer

  • Under about 70 dBA: unlikely to cause hearing loss (NIDCD).
  • 85 dBA and up: long or repeated exposure can cause hearing loss (NIDCD). NIOSH uses 85 dBA averaged over an 8-hour workday as its recommended limit.
  • Every 3 dB louder: NIOSH halves the recommended time. 88 dBA is about 4 hours; 100 dBA is about 15 minutes.
  • A simple test: if you have to raise your voice to be heard by someone an arm’s length away, it’s too loud (WHO).
  • What helps: turn it down, step away, take breaks, and wear hearing protection that fits well enough to wear all the way through.

What is a decibel, anyway?

A decibel (dB) is the unit used to measure how intense a sound is. The World Health Organization puts normal conversation at around 60 dB and a doorbell at about 80 dB.

You’ll often see “dBA” instead of plain “dB.” The A stands for A-weighted, the measurement that hearing health and workplace guidance from the NIDCD and NIOSH uses, so that’s the number to look for on a sound meter.

The tricky part is that the scale doesn’t climb in a straight line. A few decibels sounds like a small change on paper, but it makes a big difference to how long your ears can handle a sound. More on that in a moment.

How loud are everyday sounds?

Here are some familiar sounds with the ranges the NIDCD gives for them, plus how we’d think about protection for each. The ranges are wide because real life varies: a quiet matinee isn’t a summer blockbuster, and a cruising bike isn’t one at full throttle.

Sound Typical level (NIDCD) How we’d think about it
Normal conversation 60–70 dBA No protection needed.
Movie theater 74–104 dBA A light filter (9–20 dB) if a loud film bothers you.
Motorcycles and dirt bikes 80–110 dBA A 25 or 30 dB filter in The One.
Headphones at max volume, sporting events, concerts 94–110 dBA Turn headphones down; filtered earplugs for games and shows.
Sirens 110–129 dBA Distance helps most; short, unplanned exposure.
Fireworks show 140–160 dBA Solid earplugs and a little extra distance from the launch area.

If you’d like real numbers for your own life, the NIOSH Sound Level Meter app is free on iPhone. It was built for checking workplace noise, but it’s handy anywhere you’re curious: the garage, the gym, the lawn mower, a youth basketball game.

Why does a few decibels make such a big difference?

This is the part that surprises most people. NIOSH, the federal research agency for worker safety, uses what’s called the equal-energy rule. In its words, “for every 3-dB increase in noise level, the allowable exposure time is reduced by half” (NIOSH, Understanding Noise Exposure Limits).

Starting from the NIOSH recommended limit of 85 dBA for 8 hours, that rule plays out like this:

Average level NIOSH recommended time per day
85 dBA 8 hours
88 dBA 4 hours
91 dBA 2 hours
94 dBA 1 hour
97 dBA 30 minutes
100 dBA 15 minutes

So a 100 dBA concert uses up a full workday’s worth of sound in about a quarter of an hour. That’s why the NIDCD sums it up so simply: the louder the sound, the shorter the time it takes for noise-induced hearing loss to happen.

The WHO looks at this from a weekly listening angle instead. In its safe listening guidance, about 40 hours a week at 80 dB is safe, while 90 dB drops that to about four hours a week and 100 dB to about 20 minutes. Different yardstick, same lesson.

How can you tell it’s too loud without a meter?

You don’t need gear to get a good sense of it. Two easy checks:

  • The arm’s-length test. The WHO suggests checking whether you have to raise your voice to be heard by someone standing an arm’s length away. If you do, the sound is too high.
  • The shout test. The CDC says that if you need to shout to be heard, the sound is too loud and may damage your hearing.

The NIDCD has a nice rule of thumb too: steer clear of noise that is “too loud, too close, or last too long.” Any one of those is a cue to reach for protection or take a break.

And a gentle health note. If your ears ring, feel full, or sound muffled after something loud, or if you notice new or worsening tinnitus, please see a doctor or audiologist. The same goes for ear pain, ear tubes or recent ear surgery before you wear any earplug.

What can you do when you can’t avoid the noise?

The CDC’s prevention tips are refreshingly practical: turn the volume down, walk away from loud noise, take breaks, skip the loudest activities when you can, and use hearing protection. Foam plugs, earmuffs and custom-molded plugs all count, and all of them have a place.

The protection that helps most is the one you’ll keep in for the whole event. NIOSH puts it plainly: “Comfort is the key to consistent use of hearing protection” (NIOSH, Provide Hearing Protection). The same page explains that custom-molded protectors are made from an impression of your ear, so they’re shaped to you, and that fit testing can measure how much protection a person actually gets, called a Personal Attenuation Rating.

That’s a helpful reminder that the number on the package is only part of the story. How well a plug seals in your ear matters just as much.

How does Big Ear match protection to the noise?

We build every pair by hand in the USA from impressions of your own ears, in soft platinum-cure silicone. Then we pick the style to fit the sound you live with.

The One is our filtered earplug. Every pair has a two-part, analog, non-electronic filter system: a non-linear filter in the canal, plus an interchangeable flat filter on the outside in 9, 15, 20, 25 or 30 dB. The filters swap in seconds, so one pair can follow you from a quiet restaurant to the range. The One is rated NRR 25 dB with one filter installed. Here’s how we usually suggest filters:

  • 25 or 30 dB: firearms, motorcycles, indoor skydiving, around aircraft and marching band.
  • 9, 15 or 20 dB: quieter settings, where you mostly want to take the edge off.

The Standard kit ($224.95) comes with one filter set, the Select ($299.95) with two, and the Premium ($574.95) with all five, plus a hole plug, solid plugs and a tactical piece.

For times when you want quiet more than awareness, our Full Stop Super-Soft ($168.95) is a solid plug rated NRR 32 dB, made in a very soft Shore A 25 platinum-cure silicone that’s hypoallergenic and antibacterial. For heavy, high-impact noise, the Guardian Vanquisher ($179.95) is rated NRR 37 dB. You can see the whole solid family on our solid earplugs page.

Where you are Big Ear option Why
Restaurants, movies, noisy commutes The One with a 9–20 dB filter Takes the edge off for quieter settings.
Motorcycle, range, marching band The One with a 25 or 30 dB filter Our filter guidance for these louder settings.
Sleep, study, fireworks night Full Stop Super-Soft, NRR 32 dB Solid seal and very soft silicone.
Heavy, high-impact noise Guardian Vanquisher, NRR 37 dB Shore A 45 semi-soft silicone for big noise.

Every order includes our free Home Impression Kit. It ships in 2–3 business days, takes about 10–15 minutes with a helper and a guided video, and the return postage is paid. Once your impressions reach our lab, we build your pair in 40 business days, and shipping on your order is $10. You’re covered by our 30-Day Fit Warranty and a 12-month warranty against manufacturing defects (loss isn’t covered). Because each pair is made for your ears, custom products can’t be returned.

If you’re curious how the filters let speech through, our post on how filtered earplugs let you hear conversation goes deeper.

Frequently asked questions

Is 85 dB loud?

It’s the point where guidance starts to pay attention. The NIDCD says long or repeated exposure at or above 85 dBA can cause hearing loss, and NIOSH uses 85 dBA averaged over 8 hours as its recommended limit at work.

Is 70 dB safe for my ears?

According to the NIDCD, sounds at or below 70 dBA are unlikely to cause hearing loss. That’s around the level of a normal conversation.

How long can I stay at a 100 dB concert?

Under the NIOSH 3 dB rule, about 15 minutes before you reach a full day’s recommended dose. Filtered earplugs, breaks and a spot farther from the speakers all help.

Which filter in The One should I start with?

For firearms, motorcycles, indoor skydiving, aircraft and marching band, we suggest 25 or 30 dB. For quieter places, 9, 15 or 20 dB. Since the filters are interchangeable, you can pick a kit with more than one and switch as your day changes.

Do I need to see a doctor before getting earplugs?

If you have ear pain, ear tubes, recent ear surgery, or tinnitus that is new or getting worse, please check with a doctor or audiologist first.

Ready to find your pair?

Knowing your decibels is the first step; the next is protection that fits your ears and stays comfortable. Order a free Home Impression Kit, try our Find my pair guide, or give us a call at (719) 271-4528. We’re happy to talk through the noise in your life and help you pick a filter.

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