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Grid Magnetic Angle Calculator

Please enter your name and email address

This is a grid magnetic angle request form. It will calculate the angle between grid north (British National Grid) and magnetic north at a given location.

Enter ONE ONLY of the following sets of coordinates:

National Grid in metres:
Easting Value: (between 0 - 700000) Northing Value: (between 0 - 1300000)

OR

National Grid to nearest 100 m with prefix letters (see Ordnance Survey guide to giving a 6-figure grid reference):
Prefix: Easting Value: (between 0 - 1000) Northing Value: (between 0 - 1000)

OR

Latitude and Longitude (in decimal degrees):
Latitude: Longitude:

OR

Your UK postcode:

Name of Location : (optional)

Include a Map of the Location : NO YES

This option takes approx. 20 seconds to produce the map, plus the small transfer time sending the image (file size 5 K).

To submit the query, press this button: .

To clear the form, press this button: .