How to Protect Your Ears When Woodworking | Why 85 dB Is the Line

A table saw can run louder than a chainsaw at close range, and a shop full of spinning blades adds up hour after hour. The working order is always the same: quiet the machine noise first, measure what’s left, and only then pick hearing protection.

This guide covers the real action thresholds, how to estimate whether your exposure is over the line, and how to choose and wear protection that works — plus the mistakes that leave people unprotected even with good gear.

How Loud Is Woodworking, and When Does It Require Protection?

In the US, OSHA says workers exposed to a daily 8-hour average of 85 dBA or more must be included in a hearing conservation program, and its woodworking-hazards guide says hearing protection must be provided at no charge to exposed employees.

Step 1: Measure Your Shop Noise Before You Buy Anything

Guessing based on a machine’s reputation leads to the wrong pair of muffs. HSE says to reduce noise at the source first, then sample noise levels and estimate exposure time before choosing protection.

The OSHA method for figuring out whether you’re over the limit is simple arithmetic:

1. Measure the dBA at each work location with a sound level meter or dosimeter.
2. Record how much time you spend at each spot during the day.
3. Find the allowable exposure duration for each location.
4. Divide time spent by allowable time for each location, then add the fractions.
5. If the result is 1 or greater, hearing protection is required.

A total at or above 1 means protection is non-negotiable. Below it, still watch the peak numbers from the loudest single cuts.

Step 2: Choose Protection That Brings Sound Below 85 dB — But Not Below 70

That lower bound matters: cut sound too far and you lose speech, machine warnings, and the cues that tell you something’s about to go wrong.

Very loud tools may call for dual protection — earplugs worn under earmuffs. Earmuffs often deliver the highest real-world attenuation, while properly fitted foam earplugs can also offer strong protection alone.

Fit makes or breaks both options. Plugs not seated deep in the ear canal and muffs with a broken seal lose much of their rated attenuation. Real-world performance tracks how well you wear the gear, not the number on the box. To compare options, this roundup of tested ear protection for woodworking cuts through the guesswork.

Step 3: Reduce Noise at the Source First

Hearing protection is the last layer, not the first. Quieting the machine lowers the total load on your ears. Practical moves include sharper blades (dull ones cut louder), vibration-damping pads, isolating tools from hard floors and walls that bounce sound back, and spacing loud tools so you’re not standing between two at once.

For US workplaces, the OSHA woodworking-hazards guide — referencing the occupational noise standard 29 CFR 1910.95 — says employers must establish monitoring and audiometric testing programs and provide hearing protectors at no charge.

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