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What Noise Level Requires Hearing Protection? A Simple Decibel Guide

Blog thumbnail for "WHAT NOISE LEVEL REQUIRES HEARING PROTECTION? A SIMPLE DECIBEL GUIDE.

Noise exposure limits chart showing sound sources, Noise exposure limits (dB), and risk levels, from whisper (30 dB) to jet engine (140 dB).

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Employers have a legal duty to:

  • Provide earplugs or earmuffs
  • Carry out noise assessments
  • Educate staff about noise risks
  • Limit daily exposure time
Noise Level (dB)Safe Exposure Time
85 dB8 hours
88 dB4 hours
91 dB2 hours
94 dB1 hour
97 dB30 minutes
100 dB15 minutes

Source: World Health Organization, Centers for Disease Control & Prevention (CDC)


Hearing protection chart comparing foam earplugs, earmuffs, and custom plugs by use, pros, and cons.
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FAQ

What noise level requires hearing protection?

Protection is needed at 85 dB or higher. Long exposure at this level can cause hearing loss.

Can short bursts of loud noise damage hearing?

Yes. A single firework or gunshot can cause instant, irreversible damage

Are earplugs or earmuffs better?

Both work. Earplugs are portable, while earmuffs provide stronger protection in very noisy workplaces.

How often should I test my hearing?

Once a year, or sooner if your job is noisy.

What is the safe volume for headphones?

Follow the 60/60 rule—no more than 60% volume for 60 minutes.

Do children need hearing protection?

Absolutely. Their ears are even more sensitive to loud sounds.

What are the workplace noise exposure limits?

In the UK, the HSE requires action above 85 dB. Employers must provide hearing protection and limit exposure time.

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