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.

Bingo fuel (kg)

Minimum fuel state before immediate diversion.

Planned margin (kg)

Additional planned margin above bingo fuel.

Compute the joker fuel state by adding a planned margin to the bingo fuel. 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]

Joker fuel (kg)

Fuel state at which recovery is planned.

• 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.

• Bingo Fuel Calculator

  Compute the bingo fuel state by adding the transit requirement to the reserve.

• Minimum Fuel Required

  Add planned trip, alternate, contingency, and final-reserve fuel in one consistent unit, then show the margin against fuel on board. It does not substitute for route-specific regulations or aircraft performance planning.

• Contingency Fuel Percentage Calculator

  Compute the contingency allowance as a percentage of the planned trip fuel.