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Technical Article   HowTo:  Calculate Decimal Degrees from Degrees Minutes Seconds (DMS) manually

Article ID: 27215
Software:  ArcGIS - ArcEditor 8.3, 8.1, 8.1.2, 8.2, 9.0, 9.1, 9.2, 9.3, 9.3.1 ArcGIS - ArcInfo 8.2, 9.0, 8.0.1, 8.0.2, 8.1, 8.1.2, 8.3, 9.1, 9.2, 9.3, 9.3.1 ArcGIS - ArcView 8.3, 8.1, 8.1.2, 8.2, 9.0, 9.1, 9.2, 9.3, 9.3.1
Platforms: N/A

Summary

Instructions provided describe how to calculate Decimal Degrees from Degrees Minutes Seconds (DMS) manually.

Procedure

Decimal Degrees =
Degrees + ((Minutes / 60) + (Seconds / 3600))

Example:

DMS: 75 59 32.483 W

Decimal degrees: -75.9923564


 Degrees Minutes Seconds is often followed by the hemisphere labels of N, S, E, or W. When converting to decimal degrees, convert longitude values that are in the western hemisphere or latitude values that are in the southern hemisphere to negative decimal degree values.




    Created: 7/15/2004
    Last Modified: 5/3/2011

    Article Rating: (1)
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    Comments

    By Anonymous - 09/29/2004 11:20 AM

    Add the calculation to convert decimal degrees to deg min sec of arc

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