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How to Calculate a Hot Air Balloon's Lift

The lift generated by a balloon varies with temperature differential, that is the difference in temperature inside the balloon to that of the surrounding air mass and the air pressure.The formula for calculating lift is:

Balloon Lift Formula

 

Balloon Lift Calculator
This tool will calculate the lift generated by a balloon given volume, surface pressure, altitude, ambient and envelope temperatures.
Enter Balloon Volume (m3)
Enter Surface Pressure (hPa)
Enter Flight Altitude(feet)
Enter Ambient Temperature(oC)
Enter Envelope Temperature(oC)

 


Balloon Pilot and Crew Education - How to Calculate a Hot Air Balloon's Lift - Technical data content credited to Mr Steve Griffin