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We got to a cache this weekend only to find another cache location, but it said you need to be familiar with the hddd.ddddd format. Can anyone help me convert this or give me a formula for such? Thanks. 😕
Your GPSr should be able to handle three coord formats:
h ddd.ddddd° (degrees-decimal)
h ddd° mm.mmm’ (degrees minutes-decimal)
h ddd° mm’ ss.s” (degrees minutes seconds-decimal)You should be able to enter in the coords for a waypoint in one format and then switch the GPSr to the other format.
The coords on geocaching.com are in (h ddd° mm.mmm’) – degree, minutes in decimal format.
h ddd.ddddd° is the position entirely in degrees – the minutes being represented by the fraction of degree.
h ddd° mm’ ss.s” is the position in degrees, minutes and seconds.
There are 60 minutes in a degree, 60 seconds in a minute.
These are all equivalent:
58° 39.225
58° 39 13.5
58.65375°58.65375 degrees = 58° and (.65375 x 60 minutes)= 58° 39.225′
and
39.225 minutes = 39 minutes and (.225 x 60 seconds) = 39′ 13.5″To go the other way:
58° 39.225 => 58 and 39.225/60=.65375 -> 58.65375
58° 39′ 13.5″ => 58 and 39 and 13.5/60 = .225 -> 58° 39.225(If I did anything stupid here then at least I have an excuse for my DNF’s.)
As far as converting goes, your GPSr can do the work for you:
Go to your GPSr’s settings and change the units to the coordinate format you have.
Create a new waypoint using your coordinates.
Go back to the settings screen and change the units to the format you need.
View the waypoint you created above and the coordinates will show up in the new format.
For the most part though, all the coordinates you’ll encounter while geocaching are in 42° 12.345′ format.
Thanks to both of you….now we have a chance at this. 😀
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