Some basis calculation to convert DMS and DD

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09-21-2022 08:20 AM
SamriddhiSrivastava
New Contributor II

Hello.... Just wanted to share the basic calculation method for converting DMS to DD and vice versa

Sexagesimal (base 60) system
Degrees, Minutes, Seconds (DMS) e.g. 142° 32’ 23”
1 degree = 60 minutes
1 minute = 60 seconds.


Converting DMS 150° 11’ 29” to DD coordinates 
= 150 + (11/60) + (29/3600)
= 150.1914

Explanation - 150° 11’ 29”
= D + (M/60) + (S/3600)
= 150 + (11/60) + (29/3600)
= 150 + 0.1834+ 0.008

= 150.1914


Converting Decimal degrees to Degrees, minutes, seconds

150.1914
.1914x60 = 11.484
.484x60 = 29

150° 11’ 29”

Hope this will help to understand the logic behind the conversion.

 

Thanks
Samriddhi

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