Converting Between the 3 Latitude and Longitude Formats

But… before we talk about Lat/Long… lets talk about Time!

Time… we understand it • An hour is made up of 60 minutes • A minute is made up of 60 seconds • We can do the math! • What do I mean by that? • ……

Time… we understand it Imagine you just hit the button of a stop watch at… 5: 45 (and 30 seconds) • 5 hours, 45 minutes, 30 seconds • 5 hours, 45. 5 minutes • 5. 75833333 hours • We can do the math! (at least roughly for the last one)

Lat/Long calculations are similar! • There are 360 degrees in a circle (the globe) • A degree is made up of 60 minutes • A minute is made up of 60 seconds • We can do this math too!

Remember… Three Ways To Express Latitude / Longitude (for the Same Location) hddd. ddddd° Degrees (Decimal Degrees) N 43. 68216°, W 116. 28725° hddd° mm. mmm’ Degrees-Minutes (Decimal Minutes) N 43° 40. 930’, W 116° 17. 235’ hddd° mm’ ss. s” Degrees-Minutes-Seconds (Decimal Seconds) N 43° 40’ 55. 8”, W 116° 17’ 14. 1”

Lat/Long Format Conversion Do the Math! hddd 0 mm’ ss. s”: N 430 40’ 55. 8” X W 1160 17’ 14. 1” (55. 8” / 60 =. 93’) hddd 0 mm. mmm’: N 430 40. 93’ X W 1160 17. 235’ (40. 93’ / 60 =. 682160) hddd. ddddd 0 : N 43. 682160 X W 116. 287250