Bearing Calculator

Calculate initial, final and constant-course bearings between two coordinates. Compare the directions relative to true north.

Example: from the Space Needle in Seattle to the summit of Mount Rainier. Type your own points over it, or use your location.

Device location needs your permission. Your location stays in this tab until you choose an outside map or share it.

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152.268° initial bearing

Final bearing: 152.701°
Constant-course (rhumb) bearing: 152.485°
Initial magnetic bearing: 137.419°
Magnetic declination: 14.849° east

Angles are clockwise from true north. A great-circle course changes along the route; a rhumb line keeps the same bearing. Magnetic values use WMM2025 for 1 January 2027 at zero WGS84 ellipsoid height. They are withheld outside the model period or in a weak horizontal field. Local magnetic interference is not modeled. These calculations are a guide, not surveyed navigation instructions.

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How to calibrate your phone’s compass

The location finder connects a point to its city, county, ZIP area and time zone. Elevation accuracy explains terrain and device heights; IP versus GPS explains why location methods differ.

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