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.

Vref (kt)

Final-approach reference speed.

Wind additive (kt)

Additive for wind and gusts, chosen per operator policy.

Compute the final approach speed by adding a wind/gust correction to the reference speed. 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]

Vapp (kt)

Target final-approach speed.

• 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.

• Required Approach Speed Gust Calculator

  Add half the reported gust spread to the reference approach speed for gusty conditions.

• Vref Speed Calculator

  Compute final-approach speed as 1.3 times the stall speed scaled for actual weight.

• Best Glide Speed Calculator

  Compute the best glide speed for the current weight from a published reference.