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Noise PEL Calculator
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Noise PEL Calculator

Noise PEL Calculator
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Permissible Time
--
-- hours
Noise Level
--
-- dBA
noise level
85.0 dBA
tap to adjust (80-120 dBA)
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Noise PEL Formula Guide

T = 8 / 2^[(L-90)/5]
T
Permissible Time (hours)
L
Noise Level (dBA)
90 dBA
OSHA PEL for 8 hrs
5 dBA
Exchange Rate

Exchange Rate: Every 5 dBA increase halves exposure time

  • 90 dBA → 8 hours
  • 95 dBA → 4 hours
  • 100 dBA → 2 hours
  • 105 dBA → 1 hour

Action Level: 85 dBA - Hearing Conservation Program Required

Protect your hearing when noise exceeds 85 dBA. Hearing loss is permanent.