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Great Circle Distance Calculator

Calculate the shortest theoretical distance between two latitude and longitude positions on a spherical Earth. It provides nautical miles and kilometres for broad passage planning.

Enter your figures below. Results update automatically as you make changes.

Starting waypoint

Latitude

Decimal degrees: south is negative and north is positive.

Longitude

Decimal degrees: west is negative and east is positive.

Destination waypoint

Latitude

Decimal degrees: south is negative and north is positive.

Longitude

Decimal degrees: west is negative and east is positive.

Great-circle result

Great-circle distance: 395.5 NM
Kilometres: 732.4 km
Initial true bearing: 014° T · NNE

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Nautical Distance Calculator

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Navigation

Great Circle Distance Calculator

Calculate the shortest theoretical distance between two latitude and longitude positions on a spherical Earth. It provides nautical miles and kilometres for broad passage planning.

Enter your figures below. Results update automatically as you make changes.

Starting waypoint

Latitude

Decimal degrees: south is negative and north is positive.

Longitude

Decimal degrees: west is negative and east is positive.

Destination waypoint

Latitude

Decimal degrees: south is negative and north is positive.

Longitude

Decimal degrees: west is negative and east is positive.