Enter the air density and the true airspeed into the Calculator. The calculator will evaluate the Lift Energy. 

Lift Energy Formula

LE = 1/2*p*V^2


  • LE is the Lift Energy (J)
  • p is the air density
  • V is the true airspeed

To calculate Lift Energy, multiply the air density by the true airspeed squared, then divide by 2.

How to Calculate Lift Energy?

The following steps outline how to calculate the Lift Energy.

  1. First, determine the air density. 
  2. Next, determine the true airspeed. 
  3. Next, gather the formula from above = LE = 1/2*p*V^2.
  4. Finally, calculate the Lift Energy.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

air density = 4.5

true airspeed = 400