--- title: Hearing Protector Calculator (NRR) description: This calculator provides a maximum allowable time-weighted average noise exposure estimate based on the laboratory Noise Reduction Rating (NRR) for a specific hearing protection device. --- [![CavCom](https://cavcominc.com/_images/site/logo-new-600.png)](https://cavcominc.com/) # Hearing Protector Calculator (NRR) ## Hearing Protector Calculator ### Calculate Maximum Allowable Noise Exposure using Hearing Protector NRR This calculator provides a maximum allowable time-weighted average noise exposure estimate based on the laboratory [Noise Reduction Rating (NRR)](https://cavcominc.com/articles/2/the-noise-reduction-rating-nrr) for a specific hearing protection device. This estimate is used to determine compliance for hearing conservation purposes according to OSHA 1910.95(j). It is important to know that even if a maximum allowable time-weighted average is acceptable according to the OSHA formula, real world results may vary for any given individual. Therefore, [Individual Fit Testing](https://cavcominc.com/articles/81/individual-fit-testing-for-hearing-protectors) is considered best practice for understanding hearing protection attenuation for an individual worker using his/her own hearing protector as typically worn.  In addition, please note that investigation of engineering noise controls is advisable when time-weighted averages exceed 90 dBA TWA. Different calculations should be used when considering whether workplace engineering noise controls are to be implemented. [Contact CavCom](https://cavcominc.com/contact) for additional information. **Enter your information in yellow box; see results in blue.** Select Product EarzON® Custom Earplugs EarzON®-HiFi Filtered Custom Earplugs EarzON®-Lite Filtered Custom Earplugs Custom Earset (Talk Through Your Ears®, RadioGear®, Phantom™, TeamTalk™, etc.) Hi-Fi Filtered Custom Earset (RadioGear®, Phantom™, etc.) Lite Filtered Custom Earset (RadioGear®, Phantom™, etc.) TruEarz™-HiFi Filtered Earplugs TruEarz™-Lite Filtered Earplugs OMNI Earset with foam eartips (Talk Through Your Ears®, RadioGear®, Phantom™, TeamTalk™, etc.) QUAD Earset with foam eartips (Talk Through Your Ears®, RadioGear®, Phantom™,etc.) OMNI Earset with 3-flange eartips (Talk Through Your Ears®, RadioGear®, Phantom™, TeamTalk™, etc.) QUAD Earset with 3-flange eartips (Talk Through Your Ears®, RadioGear®, Phantom™,etc.) Classic™ Headset Other (enter product NRR at right 1-32) NRR: Estimated maximum allowable noise exposure in dBA TWA\*: Estimated maximum allowable noise exposure in dBA TWA\*: dBA TWA Estimated maximum allowable noise exposure in dBA TWA when using DUAL PROTECTION\*: Estimated maximum allowable noise exposure in dBA TWA when using DUAL PROTECTION: dBA TWA \* target protected exposure level = 85 dBA TWA --- ### Need More Information? 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[Home](https://cavcominc.com/) | [Contact Us](https://cavcominc.com/contact) 1872 Industries Lane, Walker, MN 56484 [(218) 967-3900](tel:218-967-3900) © 2026 CAVCOM, ALL RIGHTS RESERVED # Find Your Solution   ![CHP\_c](https://cavcominc.com/_uploads/solutions/rel_callouts/CHP_c.jpg) ![solution-icon](https://cavcominc.com/_uploads/solutions/_source/custom-hearing-protection.png) I need hearing protection » ![Hytera\_MD652](https://cavcominc.com/_uploads/solutions/rel_callouts/Hytera_MD652.jpg) ![solution-icon](https://cavcominc.com/_uploads/solutions/_source/machine-radios.png) I need radios for vehicles and machine centers » ![high-noise-img](https://cavcominc.com/_uploads/solutions/rel_callouts/high-noise-img.jpg) ![solution-icon](https://cavcominc.com/_uploads/solutions/_source/high-noise.png) I need to communicate in high noise » ![tour-img](https://cavcominc.com/_uploads/solutions/rel_callouts/tour-img.jpg) ![solution-icon](https://cavcominc.com/_uploads/solutions/_source/tour-training.png) I need to conduct plant tours in high noise » ![TTYE4000\_HalfMask](https://cavcominc.com/_uploads/solutions/rel_callouts/TTYE4000_HalfMask.jpg) ![solution-icon](https://cavcominc.com/_uploads/solutions/_source/scba.png) I need to communicate while using a respirator/SCBA » ![chest-harness-3f8bc](https://cavcominc.com/_uploads/solutions/rel_callouts/chest-harness-3f8bc.jpg) ![solution-icon](https://cavcominc.com/_uploads/solutions/_source/harnesses.png) I need carrying solutions for my 2-way radio & accessories » ![Phantom\_PAPR\_c](https://cavcominc.com/_uploads/solutions/rel_callouts/Phantom_PAPR_c.jpg) ![solution-icon](https://cavcominc.com/_uploads/solutions/_source/papr.png) I need to communicate while using a PAPR » ![hearing-test-img](https://cavcominc.com/_uploads/solutions/rel_callouts/hearing-test-img.jpg) ![solution-icon](https://cavcominc.com/_uploads/solutions/_source/fit-testing.png) I need to conduct fit testing for my hearing protectors » ![TTYE4000\_InSuit\_001](https://cavcominc.com/_uploads/solutions/rel_callouts/TTYE4000_InSuit_001.jpg) ![solution-icon](https://cavcominc.com/_uploads/solutions/_source/in-suit-comm.png) I need to communicate in hazardous locations » ![hearing-conservation-img-2](https://cavcominc.com/_uploads/solutions/rel_callouts/hearing-conservation-img-2.jpg) ![solution-icon](https://cavcominc.com/_uploads/solutions/_source/hearing-conservation.png) I need to schedule hearing conservation training » ![Hytera-Radios-family\_c](https://cavcominc.com/_uploads/solutions/rel_callouts/Hytera-Radios-family_c.jpg) ![solution-icon](https://cavcominc.com/_uploads/solutions/_source/2-way-radios.png) I need 2-way radios » ```json { "@context" : "https://schema.org", "@id" : "https://cavcominc.com", "@type" : "LocalBusiness", "address" : { "@type" : "PostalAddress", "addressCountry" : "US", "addressLocality" : "Walker", "addressRegion" : "MN", "postalCode" : "56484", "streetAddress" : "1872 Industries Lane" }, "description" : "This calculator provides a maximum allowable time-weighted average noise exposure estimate based on the laboratory Noise Reduction Rating (NRR) for a specific hearing protection device.", "image" : "https://cdn2.hubspot.net/hubfs/5293982/CavCom-logo-CMYK-1.jpg", "name" : "CavCom", "telephone" : "(218) 967-3900" } ``` ```json { "@context" : "http://schema.org", "@type" : "WebPage", "description" : "This calculator provides a maximum allowable time-weighted average noise exposure estimate based on the laboratory Noise Reduction Rating (NRR) for a specific hearing protection device.", "name" : "Hearing Protector Calculator (NRR)", "publisher" : { "@type" : "WebSite", "name" : "CavCom" }, "url" : "https://communication.cavcominc.com/hearing-protection-calculator" } ```