How Do U Calculate True Bearing

True bearing is a crucial aspect of navigation, enabling you to determine the exact direction from one point to another. Understanding how to calculate true bearing is essential for various applications, including hiking, sailing, and surveying.

1. Enter the latitude and longitude of two points.
2. Click ‘Calculate’.
3. View the results and chart below.

The formula to calculate true bearing is:

B = atan2(sin(Δλ) * cos(φ2), cos(φ1) * sin(φ2) - sin(φ1) * cos(φ2) * cos(Δλ))

Where:

• B is the true bearing.
• Δλ is the difference in longitude.
• φ1 and φ2 are the latitudes of the two points.

Comparison of Bearing Methods

Method	Result (degrees)
True Bearing	123.45
Magnetic Bearing	120.32

• Always use the latest magnetic declination for accurate results.
• Consider using a compass for cross-verification.

What is the difference between true bearing and magnetic bearing?

True bearing is based on the Earth’s geographic north pole, while magnetic bearing is based on the Earth’s magnetic north pole.

NOAA’s Magnetic Declination Calculator

USGS: How to Calculate True Bearing