Groundspeed Calculator

The groundspeed ($GS$) of an aircraft is the horizontal speed of the aircraft relative to the Earth’s surface. It is the speed at which an aircraft is actually moving over the ground. The groundspeed is a crucial parameter in navigation and flight planning.

• $GS$ is the groundspeed,
• $TAS$ is the true airspeed of the aircraft,
• $\gamma$ is the flight path angle.

The groundspeed is the measure of the rate at which an aircraft is moving horizontally along the Earth’s surface. It takes into account both the true airspeed of the aircraft and the component of the airspeed along the horizontal direction.