Noise Dose & TWA Calculator (OSHA / NIOSH)
Compute 8-hour time-weighted average and % dose.
Result
TWA (OSHA)
100.2 dBA
Dose
167.5%
HPD
Required
Output
About this tool
Enter SPL readings and time per reading; get OSHA- and NIOSH-weighted TWA, % dose, and recommended hearing protection. Targets r/OSHA and r/AudioEngineering recurring 'is this exposure over the limit' questions.
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