Indicated airspeed (IAS) Calculator

Indicated airspeed (IAS) is the measure of an aircraft’s speed relative to the air around it as displayed on the airspeed indicator. It is a crucial parameter for pilots, providing real-time information on the aircraft’s velocity during flight. The formula to calculate Indicated airspeed (IAS) as follows: 

Where:

  • is the indicated airspeed,
  • is the dynamic pressure (measured in units such as pounds per square foot or pascals),
  • is the air density (measured in units such as pounds per cubic foot or kilograms per cubic meter),
  • is the coefficient of lift (a dimensionless value representing the lift generated by the aircraft’s wings).

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