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Flight tools dashboard
Every calculator runs in your browser, validates its inputs and documents the formula it uses.
Distance & routes
Great-circle distance between two airports in km, miles and nautical miles.
Flight Time CalculatorEstimate flight duration from distance, cruise speed and a taxi/climb allowance.
Airport Distance CalculatorCompare distances from one airport to up to five others, sorted from nearest to farthest.
Great Circle Route CalculatorDistance, initial and final bearing, midpoint and waypoints between two coordinates.
Airport Coordinates ConverterConvert latitude/longitude between decimal degrees, DMS and degrees–decimal minutes.
Routes & distancesGreat-circle routes on a map
Time & time zones
Convert a date and time between any two IANA time zones, including daylight saving time.
UTC Time ConverterConvert local time to UTC (Zulu) and back, as used in aviation.
International Time Difference CalculatorTime difference between two places on any date, accounting for daylight saving time.
Arrival Time CalculatorLocal arrival time from departure time, flight duration and both time zones.
Departure Time CalculatorFind when you must depart to arrive at a given local time.
Travel Duration CalculatorReal elapsed time between a departure and an arrival in different time zones.
Layover Time CalculatorTime between an arriving and a departing flight at the same airport.
Unit converters
Convert speeds between knots, km/h, mph and m/s.
Miles to Kilometres ConverterConvert statute miles to kilometres and nautical miles, and back.
Feet to Metres ConverterConvert altitude and elevation between feet and metres, with flight level.
Nautical Miles ConverterConvert nautical miles to kilometres and statute miles.
Baggage Weight ConverterConvert luggage weight between kilograms and pounds and compare with an allowance you enter.
Altimeter Pressure ConverterConvert altimeter settings between hectopascals (QNH) and inches of mercury.
Planning & estimates
Average speed from distance and time, plus the Mach number at a given altitude (ISA).
Estimated Fuel ConsumptionRough trip fuel from flight time, burn rate and reserve percentage.
Flight Carbon EstimateRough CO₂ per passenger from distance and an adjustable fuel-per-seat assumption.