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
Easiest app to convert GPS coordinates (latitude and longitude) between decimal and Degrees/Minutes/Seconds gps coordinates format.
Garmin
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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, 2023Converting Coordinates - Basecamp Windows - Mac/Windows Software - Garmin Forums
I am using BaseCamp 3.2.1 and I have exported my waypoints into a csv file. I am seeing the lat/long coordinates in decimal degrees, which is fine. I now want to convert these coordinates into Texas State Plane 4202 (North Central Texas) coordinates. I am using a program called CORPSCON provided ... More on forums.garmin.com
garmin - 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 waypoint data that was taken 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 exampl... More on gis.stackexchange.com
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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, ...
Coordy
coordy.app › blog › convert-google-maps-to-garmin-ddm
Convert Google Maps Coordinates to Garmin DDM (Free Online) | Coordy Blog
September 9, 2025 - Use our free converter tool to instantly convert any Google Maps URL or coordinates to Garmin DDM format.
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?
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 ;-)
2 of 2
6
@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.
Coordy
coordy.app › blog › garmin-coordinate-formats-explained
Garmin Coordinate Formats Explained: DD vs DDM vs DMS | Coordy Blog
September 9, 2025 - Need device-specific help? Check out our guide on entering coordinates on Garmin eTrex 32x. Use our free converter to transform coordinates to Garmin DDM formatTry the Converter
YouTube
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How to convert GPS coordinates format on a Garmin GPS ...
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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.
2 of 2
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You can simply convert quickly with a free tool - coordy.app
Garmin Forums
forums.garmin.com › apps-software › mac-windows-software › f › basecamp-windows › 52392 › converting-coordinates
Converting Coordinates - Basecamp Windows - Mac/Windows Software - Garmin Forums
I am using BaseCamp 3.2.1 and I have exported my waypoints into a csv file. I am seeing the lat/long coordinates in decimal degrees, which is fine. I now want to convert these coordinates into Texas State Plane 4202 (North Central Texas) coordinates. I am using a program called CORPSCON provided by the Army Corps of Engineers (http://crunch.tec.army.mil/software/corpscon/corpscon.html) for my coordinate conversions.
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.
Coordy
coordy.app › blog
Blog - Garmin Coordinate Conversion Guides | Coordy
Use our free online converter to quickly transform any map link or coordinates into Garmin-ready DDM format.Try the Converter →
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.
Boulter
boulter.com › gps
GPS Coordinate Converter, Maps and Info
Decimal Degrees (WGS84) LatitudeLongitude · Degrees, Minutes & Seconds LatitudeLongitude
Garmin
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Changing the Position Format on a Garmin® Marine Device | Garmin Customer Support
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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.
2 of 2
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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.
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.
YouTube
youtube.com › mile for the camera
Garmin Instinct - How to Change the GPS Coordinates Format - YouTube
In this video I show you how to change the format for inputting GPS coordinates on your Garmin Instinct GPS watch. There are several options available includ...
Published December 21, 2020 Views 40K
Garmin Forums
forums.garmin.com › outdoor-recreation › inreach › f › gpsmap-66i › 346477 › how-to-change-grid-coordinates-to-gps-coordinates-for-use-on-topoactive-maps
How to change grid coordinates to GPS coordinates for use on topoactive maps? - GPSMAP 66i - inReach - Garmin Forums
September 13, 2023 - If you look to the right of the map, will see that the grid is UTM. The 66i does support the GDA2020 datum. (Settings > Position Format > Map Datum; the position format would be UTM UPS). So you can simply set the unit to UTM. UTM coordinates are normally given with easting first, then northing.