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Converting Hddd°mm'ss.s" To Hddd°mm.mmm' ? Converting GPS Location Formats

#1 User is offline   theonlyguy 

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  Posted 17 January 2006 - 10:24 AM

I am new at this GPS stuff and noticed there are diffrent formats for Lon/Lat's when entering waypoints into my GPS.

IE:
hddd°mm.mmm'
hddd°mm'ss.s"
hddd.ddddd°

Is there conversion calculators out there available for a Palm Pilot or windows98 that will help me to quickly convert to the format I am using in my GPS without having to switch my GPS formats arround every time I enter a location of a diffrent format?

If you have any links to some programs that will do this would you please post them for me.

Thanks!

Guy

#2 User is offline   dogbreathcanada 

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Posted 17 January 2006 - 10:42 AM

ddd°mm'ss.s" -> ddd°mm.mmm'

Take the ss.s and divide by 60. That will become the decimal portion of mm.mmm.

ddd°mm.mmm' -> ddd.ddddd°

Divide mm.mmm by 60, that will become the decimal portion of ddd.ddddd.



Just think of a clock. How would you convert seconds into minutes. Dividing the seconds by 60. How would you convert minutes into hours (degrees)? The same way, dividing by 60.

This post has been edited by dogbreathcanada: 17 January 2006 - 10:44 AM


#3 User is offline   res2100 

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Posted 17 January 2006 - 10:42 AM

I find this site very useful for converting coordinates:
http://jeeep.com/details/coord/

However I find most things on the gc.com web site are in DMD (DD.MM.ddd) so if you are using your GPS primarily for Geocaching, it would probably be best to set your GPS to that.

#4 User is offline   PDOP's 

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Posted 17 January 2006 - 11:01 AM

theonlyguy, on Jan 17 2006, 11:24 AM, said:

Is there conversion calculators out there available for a Palm Pilot

Mimee freeware for the Palm.

I would encourage you to get a PC cable for your GPSr and software to transfer waypoints. This is much easier and avoids typos.

Downloading GPX/LOC Files :anibad: ;)

#5 User is offline   theonlyguy 

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  Posted 17 January 2006 - 11:01 AM

Thank you both!

Vary helpful!
I am a not that good with math and numbers but I do have a calculator the formula will come in handy and the link too when I am at my CPU.

Thanks again!
:anibad:
Guy

#6 User is offline   Olar 

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Posted 17 January 2006 - 02:02 PM

For your PC an excellent app. is GeoCalc created by a fellow cacher, Fizzymagic.
Actually, thanks for asking your question. I discovered an update to GeoCalc that I didn't realize existed.

Cheers, Olar

#7 User is offline   theonlyguy 

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  Posted 17 January 2006 - 04:33 PM

Olar, on Jan 17 2006, 02:02 PM, said:

For your PC an excellent app. is GeoCalc created by a fellow cacher, Fizzymagic.
Actually, thanks for asking your question. I discovered an update to GeoCalc that I didn't realize existed.

Cheers, Olar

Thanks PDOP'S and OLAR for the links some good programs there. I downloaded them and am playing arround with them. I think they will be great.

I sure went to the right place for help.

Much appreciated!

Guy
:o

#8 User is offline   rlaughton 

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Posted 20 October 2007 - 06:10 AM

Excellent! Thanks for the lesson and the program link.

Does anyone know if there is a similar program that is compatible with Windows Mobile - tried that one on my Motorola Q and it is not.

In the interim, I have made an EXCEL spreadsheet that does the calculation quickly and accurately, can be loaded to your Windows Smartphone and anyone can download if from my site here:

EXCEL GPS Calculator

Posted Image

Richard

This post has been edited by rlaughton: 20 October 2007 - 06:12 AM


#9 User is offline   rlaughton 

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Posted 28 February 2008 - 01:08 PM

I was going to edit my post above to note that I have updated that EXCEL spreadsheet so you can now use it to convert between DD.MM.SS; DD.MMMM and DD.DDDDDD it both directions. Handy to have when you are out in the field checking benchmarks. I checked on EDIT in the HELP section and it appears there is a time limit allowance for editing the posts.

The link is in the post above. Enter your data where the numbers are PINK.

#10 User is offline   peiguy 

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Posted 28 February 2008 - 03:10 PM

 theonlyguy, on Jan 17 2006, 10:24 AM, said:

I am new at this GPS stuff and noticed there are diffrent formats for Lon/Lat's when entering waypoints into my GPS.

IE:
hddd°mm.mmm'
hddd°mm'ss.s"
hddd.ddddd°

Is there conversion calculators out there available for a Palm Pilot or windows98 that will help me to quickly convert to the format I am using in my GPS without having to switch my GPS formats arround every time I enter a location of a diffrent format?

If you have any links to some programs that will do this would you please post them for me.

Thanks!

Guy


A very easy way is to use your GPSr: Copy the coordinates to a waypoint on your GPSr, then go to "setup" and choose what ever coordinate system you want to change it to. The waypoint will then show what the converted coordinates.

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