We have developed four useful tools to help with the conversion of airflow units, pressure units, fume cabinet airflow and duct velocity calculations.
Airflow units
Convert units of airflow between metres cubed per hour, litres per minute, litres per second and cubic feet per minute.
How to use this calculation
Select the units you wish to convert from and then enter your value to receive the conversion.
Pressure units
Convert units of pressure between atmospheres, millibar, bar, Pascals, pounds per square inch, millimetres water and millimetres mercury.
How to use this calculation
Select the units you wish to convert from and then enter your value to receive the conversion.
Fume cabinet airflow calculations
Calculates the minimum airflow required to prevent fume escaping from a fume cabinet with an opening of known dimensions.
How to use this calculation
Enter the dimensions of your fume cabinet opening to received the required airflow to prevent fume entering the workspace.
Fill in your measurements below
Length (mm)
Width (mm)
Result
Airflow based on 0.4 m/s capture velocity.
Duct velocity calculator
Convert volumetric airflow from a duct to an airspeed reading.
How to use this calculation
Enter the volumetric airflow and the internal diameter of the duct.
Fill in your details below
Airflow (m³/hr)
Duct ID (mm)
Result
Calculation assumes a circular duct and uniform airflow.
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