GEOGRAPHY & CARTOGRAPHY CALCULATOR
Bearing Calculation
A precise tool.
What is the Bearing Calculation & How does it work?
A bearing (or azimuth) describes the direction from one point on the Earth’s surface to another, measured clockwise from true north. It is essential for navigation, surveying, and GIS applications because it translates geographic coordinates into a usable heading. To compute the bearing between two points you first convert their latitudes (Ο) and longitudes (Ξ») from degrees to radians. The difference in longitude (ΞΞ») and the trigonometric relationships of the spherical Earth are then used in the atan2 function, which correctly handles the quadrant of the result. The final bearing is expressed in degrees ranging from 0Β° to 360Β°, where 0Β° points to true north, 90Β° to east, 180Β° to south, and 270Β° to west. This value can be used directly in compass displays or as input for further route calculations.
theta = atan2big( sinDeltalambda cdot cosphi_2 , cosphi_1 cdot sinphi_2 – sinphi_1 cdot cosphi_2 cdot cosDeltalambda big)
ΞΞ» = difference in longitude (radians)
Parameters
Result
β
Frequently Asked Questions
How do I calculate the bearing between two points?
Convert latitudes and longitudes to radians, then use trigonometric formulas to find the angle.
What is a bearing in geography?
A bearing is the direction from one point on Earth’s surface to another, measured clockwise from true north.
Why is bearing important for navigation?
Bearing provides a heading that translates geographic coordinates into a usable direction for travel.
How do I convert degrees to radians?
Multiply the degree value by Ο/180 to convert it to radians.
What is azimuth in relation to bearing?
Azimuth and bearing are synonymous terms, both describing the direction from one point to another on a compass.
Can this calculator be used for GIS applications?
Yes, calculating bearings is essential for geographic information systems (GIS) in mapping and spatial analysis.
What are the units of measurement for bearing?
Bearing is typically measured in degrees, with 0Β° representing true north.
Results are for informational purposes only and do not constitute professional advice.