Better Great Circle

Air distance

Departure

Type an origin above

Air Distance

-- km

Awaiting input

+8% detour

Arrival

Type a destination above

Sea route

Departure Port / City

Type a city or country above

Sea Passage Distance

-- km

-- NM · -- h

Awaiting input

Arrival Port / City

Type a destination above

Via (optional) force the route through a waypoint.

Road distance

Departure City / Address

Type an origin above

Driving Distance

-- km

-- h -- min

Awaiting input

Arrival City / Address

Type a destination above

Route Map & OpenSeaMap Nautical Chart

Air route

Sea route

Road route

Show OpenSeaMap Seamarks

Batch calculator (.xlsx)

Choose between a Simple Template (combined city/location) or a Detailed Template (split country & city columns). Upload your file and it will calculate km (air), sea_km (maritime), and road_km (driving) for every row.

Template 1: Simple

Template 2: Split Country/City

Choose file to process

or drag a .xlsx file here