Ductulators

These handy devices/programs allow you to calculate Areas, Velocities, Flowrates, Pressure Losses and a load more design criteria either using a simple hand held circular slide rule type device …. or more recently apps for your Android or Apple device.

I have not personally tested the latter and would welcome feedback on anyone who has.  Some of the web feedbacks on these are not good – but the ones selected below appear to have reasonable feedback.

Android Apps (2021 prices)

• Duct Calc Elite £5.99  Duct Calc Elite
• HVAC Duct Sizer £6.49  HVAC Duct Sizer

Ductulators

• Ductulator – Online Calculator:  Ductulator Online
• Ductulator – Physical Wheel Calculator from Amazon:-  Buy Ductulator