Guide for Converting Latitude/Longitude Coordinates Fractions of degrees are broken down into minutes and seconds. Each minute represents 1/60th of a degree and each second represents 1/60th of a minute (or 1/3600th of a degree). Below are the steps for converting from an angle in degrees-minutes-seconds to decimal degrees and back to degrees-minutes-seconds. Examples: D = Degrees M = Minutes S = Seconds .m = Decimal Minutes .s = Decimal Seconds DM.m = Degrees, Minutes, Decimal Minutes (ex. 45°22.6333); D.d = Degrees, Decimal Degrees (ex. 45.3772°); DMS = Degrees, Minutes, Seconds (ex. 45°22'38"); Process for Converting Latitude/Longitude Coordinates: DMS --> DM.m (45°22'38" --> 45°22.6333): - Divide S by 60 to get .m (38 / 60 = 0.6333) - Add .m to M to get M.m (22 + 0.6333 = 22.6333) DM.m --> D.d (45°22.6333 --> 45.3772): - Divide M.m by 60 to get .d (22.6333 / 60 = 0.3772) - Add .d to D to get D.d (45 + 0.3772 = 45.3772) D.d --> DM.m (45.3772 --> 45°22.6333): - Multiply .d by 60 to get M.m (0.3772 * 60 = 22.6333) DM.m --> DMS (45°22.6333 --> 45°22'38"): - Multiply .m by 60 to get S (0.6333 * 60 = 38) Notes specific to latitude/longitude coordinates and Satloc: 1) For manual entry of coordinates into the airplane's Satloc equipment, make sure the input coordinates are in DM.m format. 2) To create a file for uploading to Satloc, the coordinates need to be in D.d format. Make sure the longitude is preceded by a minus sign.