Emission Rate Calculator

Calculate source emission rate from measured indoor concentration, ventilation rate, and room volume.

Measured Concentration (μg/m³)

Ventilation Rate (CFM)

Room Volume (ft³)

Background Concentration (μg/m³)

Tab to move between fields

Emission Rate (μg/hr)

7,645.5

Emission Rate (mg/hr)7.65

Source Strength (μg/m³·hr)179.98

Steady-State Conc. (μg/m³)45

Time to 90% Steady State (min)34.5

Air Exchange Rate (1/hr)4

How to Use This Calculator

Enter Measured Concentration (μg/m³), Ventilation Rate (CFM), and Room Volume (ft³).
Set Background Concentration (μg/m³).
Review the Emission Rate (μg/hr) result.
Use Emission Rate (mg/hr) and Source Strength (μg/m³·hr) to inform your decision.

Ad Placeholder