If you anticipate being in a loud setting or participating in a noisy activity, wear earplugs or protective earmuffs to safeguard your hearing. Hearing protectors are recommended for these settings and activities:

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The Sound Level Meter app developed for iOS devices by the CDC’s National Institute for Occupational Safety and Health (NIOSH) is one example of a free decibel meter app that can help you evaluate sound risks in your environment.

Consult a hearing health professional if you need help selecting hearing protection, or for information about custom-made earplugs.

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Make it a habit to wear hearing protectors when you expect to be in a loud setting, and keep earplugs or protective earmuffs handy for unexpected loud noises. If loud noise happens suddenly or unexpectedly, cover your ears with your hands and move away from the noise, if possible.

Canal caps have a stiff band that provides a gentle force to seal the earplugs, whether formable or pre-molded, into your ear canal. When not in use, the band can be worn around your neck.

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Hearing damage can happen instantly. The sound of a gunshot at close range, for example, can cause immediate and permanent damage. Other types of very loud sounds can cause hearing loss in less than 15 minutes. Exposure to repetitive loud noise—from machinery at a worksite, for example—may result in hearing loss over time.

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Earplugs and protective earmuffs are available from retail stores or online. Examples include formable foam earplugs, pre-molded earplugs, canal caps, and safety earmuffs. “Musician earplugs” are custom-made earplug molds intended to protect hearing while also allowing as much natural sound as possible to safely enter the ear. Choose a type of hearing protector that is comfortable and easy for you to use, so that you will use it consistently and correctly.

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NIDCD Information Clearinghouse1 Communication AvenueBethesda, MD 20892-3456Toll-free voice: (800) 241-1044Toll-free TTY: (800) 241-1055Email: nidcdinfo@nidcd.nih.gov

Hearing protectors don’t block all sound. Most hearing protectors have a noise reduction rating (NRR). In general, the higher the NRR, the more sound is blocked (if you are wearing the device correctly). Choose hearing protectors that allow you to communicate well in a noisy environment, so that you don’t have to remove them during conversation. Even briefly removing your hearing protectors in a very loud environment puts your hearing at risk.

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Earmuffs might not work as well for people who wear glasses because the arms of the glasses can create gaps between the earmuff cushion and the skull. If you wear glasses, check to make sure the earmuffs seal properly. Hairstyles, hats, and facial hair can create gaps that make protective earmuffs less effective.

The best ways to protect your hearing are to avoid exposure to loud sounds, move away from the noise, or turn down the volume. When these options aren’t possible, hearing protectors—earplugs or protective earmuffs—can help. Hearing protectors are wearable devices that can lower the intensity of sound that enters your ears.

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The National Institute on Deafness and Other Communication Disorders (NIDCD), part of the National Institutes of Health (NIH), supports research on the causes, diagnosis, treatment, and prevention of NIHL. The NIDCD also supports research to increase accessible, affordable hearing health care.

Proper fit is important for successful hearing protection. After inserting earplugs, your voice should sound different to you—possibly louder and/or muffled. The earplugs should feel comfortable and secure in your ears. Ask a friend or use a mirror to check positioning. You may need to practice for a comfortable, secure fit. Wearing earplugs shouldn’t be painful. Never force earplugs into your ears. If you can’t secure a comfortable fit, consider using protective earmuffs instead.

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Pre-molded earplugs are made from plastic, rubber, or silicone. One type of pre-molded earplug is high-fidelity (hi-fi) earplugs, also called uniform-attenuation earplugs. They have the same effect as turning down the volume on a stereo: the sound intensity is evenly decreased across different pitches. You might find high-fidelity earplugs especially helpful at movies or concerts and at other times when you want to appreciate the audio quality while protecting your hearing.

Protective earmuffs are easy-to-use, padded plastic and foam cups joined by an adjustable headband. (They aren’t the soft earmuffs worn for warmth.) They reduce noise by completely covering both ears. Sizes for adults and children are available. Earmuffs are easier than earplugs to use correctly, especially for young children.

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NIHL is a significant health problem for U.S. youth and adults. According to the Centers for Disease Control and Prevention (CDC), self-reported hearing tests show that about one in seven U.S. teens and nearly one in four U.S. adults (ages 20 to 69) have features suggestive of NIHL in one or both ears.

The NIDCD maintains a directory of organizations that provide information on the normal and disordered processes of hearing, balance, taste, smell, voice, speech, and language.

Loud sounds can damage sensitive structures in your inner ear, causing noise-induced hearing loss (NIHL) and tinnitus (ringing, roaring, or buzzing in the ears). The louder the sound, the faster it can damage your hearing.

Formable foam earplugs are made of soft foam. Once inserted, these earplugs expand to fill your ear canal snugly. Formable foam earplugs are meant for one-time use, but they can be reused if they are clean and still fully expand to their “like new” shape.

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Sound is measured in units called decibels. Sounds at or below 70 A-weighted decibels (dBA) are generally safe. A single very loud noise or long or repeated exposure to sounds at or above 85 dBA can cause hearing loss. Here are average decibel ratings for a few familiar sounds:

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Earplugs are inexpensive devices placed directly into your ear canal. Earplugs come in various sizes, but can be hard to find in sizes that fit children. Earplugs may have cords attached to help you keep track of them. Specialty earplugs, including earplugs that are custom-molded to your ears, are also available.