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A flight distance calculator uses the Haversine formula to compute the great-circle distance between two geographic coordinates — the shortest surface path aircraft follow.

Formule

Haversine distance = 2R × arcsin(√[sin²(Δlat/2) + cos(lat1)×cos(lat2)×sin²(Δlon/2)]) | R = 6,371 km

Stapsgewijze handleiding

1Haversine formula uses lat/lon in radians
2Earth mean radius = 6,371 km
3Great-circle is shorter than flat-map distance on long routes
4Estimated flight time = Distance / 900 km/h (typical cruise)

Uitgewerkte voorbeelden

Invoer

London (51.5°N, 0.1°W) → Sydney (33.9°S, 151.2°E)

Resultaat

≈ 16,993 km; ~19–22 hours flight time

Veelgestelde vragen

What is Flight Distance?

A flight distance calculator uses the Haversine formula to compute the great-circle distance between two geographic coordinates — the shortest surface path aircraft follow. Use this calculator for accurate, instant results.

How accurate is the Flight Distance calculator?

The calculator uses the standard published formula for flight distance. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Flight Distance calculator use?

This calculator works with inches, kilometres, kilometres per hour. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Flight Distance calculator use?

The core formula is: Earth mean radius = 6,371 km. Each step in the calculation is shown so you can verify the result manually.

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