Use this calculator for flight-planning study or a first-pass cross-check when all inputs describe the same aircraft, atmospheric condition, and phase of flight.

Altitude (ft)

Altitude available for the glide.

Glide ratio

Glide ratio, for example nine for nine forward units per one down.

Compute how far an aircraft can glide from an altitude at a given glide ratio. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Glide distance (nm)

Horizontal gliding distance.

• Do not use a generic calculator in place of the current aircraft flight manual, approved performance data, operating limitations, NOTAMs, weather, or regulations. Real performance changes with configuration, runway condition, altitude, temperature, wind, loading, and technique.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Cross-check the result against the aircraft flight manual or approved planning system, then apply the required safety margins. Keep signed wind, heading, altitude, speed, and fuel conventions explicit.

• Glide Ratio Calculator

  Compute the glide ratio as horizontal distance covered per unit of altitude lost.

• Weight Shift CG Calculator

  Compute how far the center of gravity moves when a load is shifted a given distance.

• Descent Angle Calculator

  Compute the flight path angle of a descent from the altitude lost over a given distance.