Someday, working with latitude/longitude in degrees-minutes-seconds will be a bad memory, and everyone will use either decimal degrees or rational metric units like UTM exclusively. But until that happy day, if you need a desktop utility to easily convert from degrees-minutes-seconds to decimal degrees or degrees-minutes (and the opposite direction as well), you may find it useful to have the Degree/Minute/Second Converter from Mentor Software handy. It’s a small download at 307 kB with a full installer, but make note of which Start Menu folder it puts the shortcuts in (default is Accessories). Operation is dead simple:
Enter the degrees, minutes and seconds separated by spaces, set the number of decimal places with the Precision option, select the result type you want, then click Convert. It converts in the opposite sense directly, i.e. enter a decimal degree and have it converted to degrees-minutes or degrees-minutes-seconds. In this latter mode, checking Min/Sec Blank Fill removes the zero from the front of single digit minutes and seconds (e.g. 1 instead of 01 minute, 4.2 instead of 04.2 seconds). Can’t quite figure out what Degree Zero Fill does, though ….