Maps & Distance
Great circle distance, bearing, coordinates and map scale.
- Area Density Calculator Mass per unit area in kg/m², g/m², lb/ft² and oz/yd², from a mass and an area.
- Bearing Between Coordinates Calculator The initial and final bearing between two latitude and longitude points, with the compass point and the constant-compass bearing.
- Coordinate Converter: DMS and Decimal Degrees Converts latitude and longitude between decimal degrees, degrees minutes seconds, and degrees decimal minutes.
- Elevation Gain and Grade Calculator Total climb and descent along a route from spot heights, with the average grade, angle and slope length.
- Great Circle Distance Calculator The shortest distance over the Earth between two latitude and longitude points, by the haversine formula.
- Map Scale Calculator Converts between distance on a map and distance on the ground, and works out a map’s scale from the two.
- Midpoint Between Coordinates Calculator The halfway point along the great circle between two latitude and longitude points.
- Nautical Miles and Knots Calculator Passage time from distance in nautical miles and speed in knots, with both converted to everyday units.
- Population Density Calculator People per square kilometre and square mile, from a population and area you enter.