NRR Calculator
Estimate your noise exposure with hearing protection
Environment Noise
Protection Equipment
Calculation Mode
OSHA
Standard estimation
Estimated Noise Exposure
102dB
↓ -13 dB reduction
⚠️ Insufficient Protection
OSHA Mode | Single Protection Method ((NRR-7)/2)
Safe85 dBUnsafe
⚠️ Important Note
NRR is a laboratory rating. Real-world protection can be significantly lower due to fit, seal, and wear time.
This calculator provides an estimate for educational purposes only. Always follow manufacturer guidelines and safety regulations.