If you divide those "strange" latitudes and longitudes by 11930465, you get the North and East degree values you expect:
But don't ask me why ;-)
Answer from AndreJ on Stack ExchangeGPS Coordinates
gps-coordinates.net › gps-coordinates-converter
GPS coordinate converter
This tool is all about GPS coordinates conversion. As soon as you modify one end of the data (either the decimal, sexagesimal degrees or degrees and decimal minutes coordinates), the other end is simultaneously updated by the coordinates converter, as well as the position on the map.
Garmin
support.garmin.com › en-US
Matching Coordinates and Position Format | Garmin Customer Support
Garmin Support Center is where you will find answers to frequently asked questions and resources to help with all of your Garmin products.
Convert Garmin or iPhone weird GPS Coordinates - Geographic Information Systems Stack Exchange
I am trying to find a way to convert over 500 locations I have saved in my Garmin iPhone GPS app (iPhone 4S using Garmin StreetPilot v2.7), but I can't find a way to convert these coordinates as th... More on gis.stackexchange.com
How to enter Google maps coordinates into my Garmin GPS
Google Maps shows you the coordinates in decimal degrees. On the Garmin, it should be listed as hddd.ddddd° Probably at the top of the list, maybe depends on what model Garmin you are using. Also Garmin shows the coordinates with N/S and E/W, instead of positive/negative. More on reddit.com
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October 12, 2023garmin - Converting Coordinates formatted as Lat 4531.38153 Long 12347.2328 to Decimal Degrees? - Geographic Information Systems Stack Exchange
I've inherited some 20 year old ... with a Garmin GPS. I don't recognize the lat/lon coordinates as DMS, decimal minutes, or decimal degrees. Here's one record as an example: Lat 4531.38153 Long 12347.2328. I know the very general location of this record to be Lat 45 degrees, Lon -123 degrees. Can somebody tell me the format of these coordinates so I can convert to decimal ... More on gis.stackexchange.com
Converting compass coordinates to a GPS point
It is a fair bit more difficult than just converting some numbers. The "compass coordinates" for instance are not coordinates. They are likely just bearing angles and distances. The basis of those angles could be all over the place. In other words if you wanted to get to lat/longs then you need true north angles. You can use those "compass coordinates" to see if the lot closes or not. Once you find a few monuments you can then rotate those directions and distances to use to find others. These steps take a bit of work and not really in the DIY world. In a real survey, the work will normally include looking into the lot we are working on as well as the abutting lots and streets. We also may need to run back title on a lot to see if there are any transcription errors in the deeds. Long story short, if you need to know where your boundaries are then please hire a pro to do the work. It is worth the cost when you need to know. More on reddit.com
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Coordy
coordy.app › blog › convert-google-maps-to-garmin-ddm
Convert Google Maps Coordinates to Garmin DDM (Free Online) | Coordy Blog
September 9, 2025 - This format is preferred by many Garmin devices because it's easier to enter manually and read on small GPS screens. 1. Copy any Google Maps URL (like https://maps.google.com/?q=54.8979,23.8860) 2. Paste it into our converter above 3. Get instant DDM format ready for your Garmin
Mapwel
mapwel.net › coorconversion.htm
Mapwel Mapping Software for Garmin GPS - Coordinates Conversion
Global Positioning System uses World Geodetic System (revision 1984, i.e. WGS84) as the reference coordinate system. Map files compatible with Garmin GPS units use WGS84 too. Therefore, Mapwel converts all input data like shape files or calibration point coordinates to WGS84 angular coordinates, ...
Top answer 1 of 2
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If you divide those "strange" latitudes and longitudes by 11930465, you get the North and East degree values you expect:
But don't ask me why ;-)
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@AndreJ's answer is right. I just add the reason for this "strange" number :
it seems Garmin stores its angular coordinates using a 32-bit integer, so that gives 232 possible values.
We want to be able to represent values up to 360° (or more exactly -180 to 180), so each degree represents 2^32 / 360 = 11930465.
So dividing your coordinate by 11930465 will give the decimal value.
By the way, this value encoding is also present in fit files (Flexible and Interoperable Data Transfer) also originating from Garmin.
ExpertGPS
expertgps.com › garmin.asp
Convert Garmin GPS Data to/from DXF, SHP, KML, CSV, GPX
May 1, 2026 - Convert between Garmin waypoints and tracks to and from any GPS, GIS, CAD, or map format with ExpertGPS, an easy-to-use file converter and GPS map program for Garmin GPS users.
Garmin
support.garmin.com › en-US
Navionics Boating: GPS Coordinate Format | Garmin Customer Support
Garmin Support Center is where you will find answers to frequently asked questions and resources to help with all of your Garmin products.
YouTube
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How to convert GPS coordinates format on a Garmin GPS ...
To learn more, please visit the YouTube Help Center: https://www.youtube.com/help
Reddit
reddit.com › r/garmin › how to enter google maps coordinates into my garmin gps
r/Garmin on Reddit: How to enter Google maps coordinates into my Garmin GPS
October 12, 2023 -
TBH I have no clue how coordinates actually work. I know google maps uses WGS84 as standard but I'm struggling with the format of the coordinates. I want to enter the google maps coordinates into my GPS.
I can set the GPS to WGS84 but for the coordinate format, none of the selection matches the google maps one. Google Maps, take as an example this one: 37.233515, -115.812663
in my GPS I have as selections:
h ddd° mm.mmm'
h ddd° mm' ss.s"
MGRS
Grid RT-90
SWEREF 99TM
US National Grid
British National Grid
Grid KKJ27
French Grid
Gauss-Boaga East
Gauss-Boaga West
UTM
none of these allows me to input the google coordinates, they all look different
Top answer 1 of 2
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Google Maps shows you the coordinates in decimal degrees. On the Garmin, it should be listed as hddd.ddddd° Probably at the top of the list, maybe depends on what model Garmin you are using. Also Garmin shows the coordinates with N/S and E/W, instead of positive/negative.
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You can simply convert quickly with a free tool - coordy.app
Garmin
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Changing the Position Format on a Garmin® Marine Device | Garmin Customer Support
Garmin Support Center is where you will find answers to frequently asked questions and resources to help with all of your Garmin products.
Horizons Unlimited
horizonsunlimited.com › hubb › navigation-maps-compass-gps › how-do-i-convert-google-56609
how do i convert google coordinates into something Garmin understands - Horizons Unlimited - The HUBB
header says it all. Google give something like NN.nnnnnnn and my Garmin wants NN.NN. nnn how can i use google co ordinates as a destination on my garmin?
Garmin
support.garmin.com › en-US
Position Formats Supported by Garmin Outdoor Devices | Garmin Customer Support
Garmin Support Center is where you will find answers to frequently asked questions and resources to help with all of your Garmin products.
Garmin
support.garmin.com › en-US
Changing the position format on the GPSMAP 62/64/65/66/67/78 and 79 series device | Garmin Customer Support
Garmin Support Center is where you will find answers to frequently asked questions and resources to help with all of your Garmin products.
ExpertGPS
expertgps.com › convert-address.asp
Lat/Lon Geocoding: Convert Addresses to Garmin GPS Waypoints, Favorites and POIs
Geocode and convert street addresses to latitude and longitude, create waypoints, favorites, and Points of Interest for any Garmin GPS. Map addresses over aerial photos.
Coordy
coordy.app › blog › garmin-coordinate-formats-explained
Garmin Coordinate Formats Explained: DD vs DDM vs DMS | Coordy Blog
September 9, 2025 - 1. Hold Menu → System → GPS 2. Select Position Format 3. Choose hddd°mm.mmm' (DDM format) ... Ready to convert your coordinates? Try our free converter to instantly convert between any of these formats for your Garmin device.
Coordy
coordy.app › blog
Blog - Garmin Coordinate Conversion Guides | Coordy
Step-by-step guide with examples for accurate GPS navigation. ... Use our free online converter to quickly transform any map link or coordinates into Garmin-ready DDM format.Try the Converter →
iPad Pilot News
ipadpilotnews.com › home › trying out the surprisingly useful gps coordinate converter app
Trying out the surprisingly useful GPS Coordinate Converter app : iPad Pilot News
September 21, 2016 - Simply input a lat/lon, and it gives you the same point in multiple formats – even the street address with time zone. Next, GPS Coordinate Converter allows you to measure the distance between any two waypoints, complete with bearing and distance.
Gpscoordinates
gpscoordinates.eu › convert-gps-coordinates.php
GPS coordinates, points of interest, POI, waypoints, routes, tracks, maps, locations
GPS coordinates, points of interest, POI, waypoints, tracks and routes for GPS receivers as garmin and navigation systems as tomtom
Top answer 1 of 2
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They look like Degrees Decimal Minutes (DDM) with the degree and minutes symbols dropped.
Try reading Lat 4531.38153 Long 12347.2328 as Lat 45° 31.38153' Long 123° 47.2328'
You may find this PGC Coordinate Converter useful.
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I suppose it might be NMEA. It has quite strange coordinates representation: lat is DDMM.MMMMM and lon is DDDMM.MMMMM.
Boulter
boulter.com › gps
GPS Coordinate Converter, Maps and Info
Decimal Degrees (WGS84) LatitudeLongitude · Degrees, Minutes & Seconds LatitudeLongitude