About Bearing & Azimuth Calculator
Compute precise compass navigation bearings between two geographic points. Calculates forward initial azimuth (0° to 360°), reciprocal back bearing (±180°), 16-point and 32-point mariner compass directions, quadrant bearings, and magnetic declination estimates.
Key Capabilities & Features
- Calculates initial forward azimuth (0.0° to 359.9°) and reciprocal back bearing
- Interactive SVG compass rose visualizer displaying dynamic needle orientation
- 16-point and traditional 32-point mariner compass point designations (e.g. NNE, SWbW)
- Surveyor quadrant bearing format (e.g. N 45.2° E) and dipole magnetic declination estimates
How to Use Bearing & Azimuth Calculator
Enter Origin & Target
Input coordinates for starting position and target destination.
Inspect Heading Needle
View real-time animated compass needle alignment.
Review Azimuths
Read forward azimuth, back bearing, and mariner compass point.
Privacy & In-Browser Execution Guarantee
100% client-side calculation. Your data never leaves your browser.
Frequently Asked Questions
What is back bearing?
A back bearing (or reciprocal bearing) is the exact opposite compass direction (180° opposite) of your forward bearing, used to retrace your path back to the origin.
What is the difference between true bearing and magnetic bearing?
True bearing is measured relative to True Geographic North (the North Pole), while magnetic bearing is measured relative to Magnetic North. The difference between them is called magnetic declination.