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.

Diversion distance (nm)

Distance to the diversion airport.

Ground speed (kt)

Expected ground speed to the diversion airport.

Burn rate (kg/h)

Average fuel consumption rate.

Approach allowance (kg)

Extra fuel for the approach, one missed approach, and landing.

Compute the fuel needed to divert a given distance plus an approach and landing allowance. 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]

Diversion fuel (kg)

Total fuel required to divert and land.

• 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.

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