Free Navigation Tool
Distance and Course in Nautical Miles
Distance in nautical miles and true course between GPS positions – with waypoints, travel time and a great-circle comparison.
Free to use
No signup required
Instant results
Type or paste, latitude first – as decimal degrees, degrees and minutes, or degrees, minutes and seconds. Spaces are fine instead of ° ′ ″.
Enter start and destination to see distance and course here.
Course and distance
Distance and course are for the rhumb line: the straight line on the chart, sailed on a constant course. The course is true – for the compass, still apply variation and deviation (Navigation Calculator). The great circle is the shortest route on the globe; over short distances the difference is negligible, on ocean passages at high latitudes it can amount to many miles. 1 nm = 1852 m = one minute of latitude.
Straight line, regardless of land, shoals or channels. Not a substitute for passage planning on the chart.
Also in the ClearShip app: Distance & Course
Works offline on board where there is no signal, next to the anchor alarm and your boat's maintenance tasks.
More about the app
iPhone version coming to the App Store
Discover More Sailing Tools
Register for ClearShip to manage boat maintenance, tasks, checklists, inventory, and collaborate with your crew - plus access all sailing tools.
Unit Converter
Nautical and metric conversions
Wind Converter
Wind speed and Beaufort scale
Phonetic Alphabet
NATO alphabet and text converter
OpenSeaMap
Interactive nautical charts
Weather Charts
European weather and wind maps
Sail Trim
Sailing optimization guide
Wind Triangle
True and apparent wind, visualized
VMG Calculator
Optimal upwind and downwind angles
Laylines
Port and starboard tack laylines to a mark
Mayday Emergency
Distress call generator
Navigation Calculator
Course conversion, leeway, and current triangle
Coordinate Converter
GPS position in degrees, minutes, seconds
Anchor Calculator
Calculate anchor rode length and scope
Crew List
IMO FAL Form 5 crew list generator
Boat Floor Plan Editor
Draw your boat layout with boat symbols, export as SVG