Magnetic Declination to West Calculator

✖Magnetic Bearing is the horizontal angle which a line makes with the magnetic meridian is called magnetic bearing. It varies with time.ⓘ Magnetic Bearing [MB]			+10% -10%
✖True Bearing is the horizontal angle measured clockwise between the true meridian and the line is called true bearing of the line.ⓘ True Bearing [TB]			+10% -10%

✖Magnetic Declination is the horizontal angle between true north and magnetic north at the time of observation.ⓘ Magnetic Declination to West [MD]

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Magnetic Declination to West Solution

STEP 0: Pre-Calculation Summary

Formula Used

Magnetic Declination = Magnetic Bearing-True Bearing
MD = MB-TB
This formula uses 3 Variables

Variables Used

Magnetic Declination - (Measured in Radian) - Magnetic Declination is the horizontal angle between true north and magnetic north at the time of observation.
Magnetic Bearing - (Measured in Radian) - Magnetic Bearing is the horizontal angle which a line makes with the magnetic meridian is called magnetic bearing. It varies with time.
True Bearing - (Measured in Radian) - True Bearing is the horizontal angle measured clockwise between the true meridian and the line is called true bearing of the line.

STEP 1: Convert Input(s) to Base Unit

Magnetic Bearing: 55 Degree --> 0.959931088596701 Radian (Check conversion here)
True Bearing: 60 Degree --> 1.0471975511964 Radian (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

MD = MB-TB --> 0.959931088596701-1.0471975511964

Evaluating ... ...

MD = -0.0872664625996991

STEP 3: Convert Result to Output's Unit

-0.0872664625996991 Radian -->-4.99999999999994 Degree (Check conversion here)

FINAL ANSWER

-4.99999999999994 ≈ -5 Degree <-- Magnetic Declination

(Calculation completed in 00.004 seconds)

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Credits

Created by Chandana P Dev

NSS College of Engineering (NSSCE), Palakkad

Chandana P Dev has created this Calculator and 500+ more calculators!

Verified by Mithila Muthamma PA

Coorg Institute of Technology (CIT), Coorg

Mithila Muthamma PA has verified this Calculator and 700+ more calculators!

< Compass Surveying Calculators

Included Angle when Bearings are Measured in Same Side of Different Meridian

LaTeX Go Included Angle = (180*pi/180)-(Fore Bearing of Previous Line+Back Bearing of Previous Line)

Included Angle when Bearings are Measured in Opposite Side of Common Meridian

LaTeX Go Included Angle when Bearings are in Opposite Side = Back Bearing of Previous Line+Fore Bearing of Previous Line

Included Angle from Two Lines

LaTeX Go Included Angle = Fore Bearing of Previous Line-Back Bearing of Previous Line

Fore Bearing in Whole Circle Bearing System

LaTeX Go Fore Bearing = (Back Bearing-(180*pi/180))

Magnetic Declination to West Formula

LaTeX Go

Magnetic Declination = Magnetic Bearing-True Bearing
MD = MB-TB

What are Isogonic and Agonic lines?

Lines joining the places of equal magnetic declination are known as Isogonic lines and those joining the places of zero declination are termed as Agonic lines. On the agonic lines, the magnetic needle defines true as well as magnetic north.

How to Calculate Magnetic Declination to West?

Magnetic Declination to West calculator uses Magnetic Declination = Magnetic Bearing-True Bearing to calculate the Magnetic Declination, The Magnetic Declination to West formula is defined as the angle between the geographic north (true north) and the magnetic north, where the magnetic north lies to the west of the true north. This angle varies depending on the geographic location and changes over time due to variations in the Earth's magnetic field. Magnetic Declination is denoted by MD symbol.

How to calculate Magnetic Declination to West using this online calculator? To use this online calculator for Magnetic Declination to West, enter Magnetic Bearing (MB) & True Bearing (TB) and hit the calculate button. Here is how the Magnetic Declination to West calculation can be explained with given input values -> -286.478898 = 0.959931088596701-1.0471975511964.

FAQ

What is Magnetic Declination to West?

The Magnetic Declination to West formula is defined as the angle between the geographic north (true north) and the magnetic north, where the magnetic north lies to the west of the true north. This angle varies depending on the geographic location and changes over time due to variations in the Earth's magnetic field and is represented as MD = MB-TB or Magnetic Declination = Magnetic Bearing-True Bearing. Magnetic Bearing is the horizontal angle which a line makes with the magnetic meridian is called magnetic bearing. It varies with time & True Bearing is the horizontal angle measured clockwise between the true meridian and the line is called true bearing of the line.

How to calculate Magnetic Declination to West?

The Magnetic Declination to West formula is defined as the angle between the geographic north (true north) and the magnetic north, where the magnetic north lies to the west of the true north. This angle varies depending on the geographic location and changes over time due to variations in the Earth's magnetic field is calculated using Magnetic Declination = Magnetic Bearing-True Bearing. To calculate Magnetic Declination to West, you need Magnetic Bearing (MB) & True Bearing (TB). With our tool, you need to enter the respective value for Magnetic Bearing & True Bearing and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Magnetic Declination?

In this formula, Magnetic Declination uses Magnetic Bearing & True Bearing. We can use 1 other way(s) to calculate the same, which is/are as follows -

Magnetic Declination = True Bearing-Magnetic Bearing

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