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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.

Choose your airflow unit

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.

Select your pressure type and level

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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