Noise Dose Calculator

Calculate OSHA noise dose percentage and TWA from segmented dBA exposures using the 5-dB exchange rate formula.

Segment 1 level (dBA)

Segment 1 duration (hrs)

Segment 2 level (dBA)

Segment 2 duration (hrs)

Segment 3 level (dBA)

Segment 3 duration (hrs)

Segment 4 level (dBA)

Segment 4 duration (hrs)

Tab to move between fields

Noise dose (%)

81.3%

8-hr TWA (dBA)88.5

Total exposure hours8

Exceeds action level?1

Exceeds PEL?0

Annual dose-days20,313

How to Use This Calculator

Enter Segment 1 level (dBA), Segment 1 duration (hrs), and Segment 2 level (dBA).
Set Segment 2 duration (hrs), Segment 3 level (dBA), and Segment 3 duration (hrs).
Adjust Segment 4 level (dBA), Segment 4 duration (hrs) as needed.
Review the Noise dose (%) result.
Use 8-hr TWA (dBA) and Total exposure hours to inform your decision.

Ad Placeholder