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Bearing Calculator

Calculate initial compass bearing angle and cardinal direction between two coordinates.

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Compass Heading Input

Enter coordinate parameters below.

Start Latitude (°N)

Target Latitude (°N)

Initial Compass Bearing

058° (NE) Initial true heading direction

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Navigation Tip

Compass bearings are measured clockwise from True North (000° North, 090° East, 180° South, 270° West).

Geodetic Methodology & Standards

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Formula & Spatial Projection

θ = atan2(sin(Δlon)cos(lat2), cos(lat1)sin(lat2) - sin(lat1)cos(lat2)cos(Δlon))

Applies official WGS84 ellipsoid geodetic projection models.

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Important Geodetic Note

True bearing differs from magnetic bearing by local magnetic declination.

How to Convert Step-by-Step

Follow these simple steps for exact GPS coordinate conversion:

Enter Source Coordinates

Enter latitude, longitude, or grid reference into the input boxes.

Verify Hemisphere Sign

Ensure proper positive (N/E) or negative (S/W) signs are entered.

Read Decoded Output

Review formatted results in the right-hand panel.

Detailed Insights & FAQ

ℹ️ About this Calculation

Geodetic coordinate transformations ensure precise spatial positioning across cartography and navigation.

Variable Glossary

Input

Geographic Coordinate

Source position value.

Output

Target Grid / Format

Transformed coordinate system.

Frequently Asked Questions

What is the difference between True and Magnetic bearing?

True bearing points toward geographic North Pole; Magnetic bearing points toward Magnetic North Pole.

What bearing is Due East?

Due East is exactly 090°.

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