Description

This data field is a reworked version of my simple data field OS Grid Reference app (https://apps.garmin.com/apps/d56ff2c7-98d6-4390-8e99-4c844f1f32d1) The app calculates and shows the Great Britain or Ireland Ordnance Survey grid reference for the current position. It takes the latitude and longitude from your device's GPS location and converts it to the equivalent OS grid reference. This is displayed in the standard letters and digits format. The GB Ordnance Survey National Grid is designed to cover Great Britain and its islands and the Ordnance Survey of Ireland National Grid covers the island of Ireland. If you are not inside either of those areas the widget will show "Outside Grid". The required number of digits can be chosen as a setting using Garmin Express or Connect Mobile. You can choose 4, 6, 8 or 10. The default shows six-figure (100m precision) grid references. You can choose how the grid is selected and the default grid. The two National Grids overlap, i.e. there are places that can produce both a valid Irish & UK grid reference. If you choose “Best Guess” the app will decide which grid is most suitable. If you choose “Strict” the app will try with the default grid and if that does not produce a grid reference it will try the other one. This means you could get Irish references for some parts of Great Britain and vice versa. For areas that are only covered by one grid a reference will always be displayed using the appropriate National Grid. The defaults are “Best Guess” and “Britain”. The main driver for making this version was an attempt to optimise the font size and layout so 10 figure grid references can be displayed better, particularly in small data fields, i.e. when you show several data fields on one screen. Please note it's not possible for 10 figure references to fit into the smallest data fields on every device. Differences from the original 1. Supported by fewer devices - it might not exist for yours. 2. Uses more memory, this is the reason for point 1. 3. Layout differs for some devices and some data fields. Depending on your use, the original might be better for you. The conversion routines are a cut down version of the excellent work at https://www.movable-type.co.uk/scripts/latlong-os-gridref.html (© 2002-2016 Chris Veness). The original scripts, and therefore this work, are released under an MIT licence (https://opensource.org/licenses/MIT), without any warranty express or implied. If you're interested in how it all works I definitely recommend you to have look at Chris's page. The data field was created for my personal use – but I've shared it for anyone who would like to try it. The icon was made by Pixel Buddha from flaticon (https://www.flaticon.com/authors/pixel-buddha) licensed by CC BY 3.0 (https://creativecommons.org/licenses/by/3.0). I've tested the data field on my vívoactive® HR and other devices in the simulator. Please contact me if you have any problems, comments or requests. In particular there is probably still more tweaking that could be done to the labels & font sizes; let me know if you would like me to customise a specific layout. Include your email address if you would like a reply. The original can be found at https://apps.garmin.com/en-US/apps/d56ff2c7-98d6-4390-8e99-4c844f1f32d1 I've also made the app as a widget, available from https://apps.garmin.com/en-US/apps/10473162-3729-40e9-9a72-b7c16528c758 Disclaimer Please note that I can accept no responsibility for the correctness of the grid references shown. You should never rely on this data field alone for navigation purposes. To be safe, always understand how to navigate without your Garmin device.

What is new

Added support for new models. Built with SDK 9.2.0 (Version 2.3.9.f) Added support for new models. Built with SDK 9.2.0 (Version 2.3.9.e) Added support for more Instinct devices. Built with SDK 9.2.0 (Version 2.3.9.d) Added support for Instinct 2 & Descent G1. Built with SDK 9.2.0 (Version 2.3.8.c) Added support for new models. Built with SDK 9.1.0 (Version 2.3.9.b) Added support for new model. Built with SDK 9.1.0 (Version 2.3.9.a) Corrected serious bug introduced in previous version. Built with SDK 8.4.1 (Version 2.3.9) Added support for new models. Built with SDK 8.3.0 (Version 2.3.8) Added support for new models. Built with SDK 8.2.3 (Version 2.3.7) Added support for new models. Built with SDK 8.2.1 (Version 2.3.6) Added support for some new models. Built with SDK 8.1.1 (Version 2.3.5) Added support for some new models. Built with SDK 7.3.0 (Version 2.3.4) Added support for some new models. Built with SDK 7.2.1 (Version 2.3.3) Added support for some new models. Built with SDK 6.3.0 (Version 2.3.2) Rebuilt with support for new models using SDK 4.2.4 (Version 2.3.1) Rebuilt with support for new models using SDK 4.1.6 (Version 2.3.0) Rebuilt with support for new models using SDK 4.1.4 (Version 2.2.3) Rebuilt with support for new models using SDK 4.0.8 (Version 2.2.2.v) Rebuilt with support for new models using SDK 4.0.4 (Version 2.2.1) Added support for D2 Air. (Version 2.2.0.c) Added support for Venu Sq. (Version 2.2.0.b) Rebuilt with SDK 3.2.2 for the latest devices. (Version 2.2.0.a) Added Irish grid reference calculation and optional automatic grid choice. (Version 2.2.0) Rebuilt for new models with SDK 3.1.9 (Version 2.1.0.a) Changed some code to avoid a potential bug with some devices. (Version 2.1.0) Reworked the layouts again. Rebuilt for new models with SDK 3.1.7 (Version 2.0.0) Added support for MARQ Collection (Versions 1.0.0.b) Rebuilt for new models with SDK 3.0.11. (Version 1.0.0.a)

Screenshots

OS Grid Reference DF · Screenshot 0 OS Grid Reference DF · Screenshot 1 OS Grid Reference DF · Screenshot 2 OS Grid Reference DF · Screenshot 3 OS Grid Reference DF · Screenshot 4

Supported language (1)

English

Compatible devices (288)

Approach® S50 Approach® S60 Approach® S60 Approach® S62 Approach® S62 Approach® S70 (42mm) Approach® S70 (47mm) Approach® S72 - 43 mm Approach® S72 - 47 mm Captain Marvel Captain Marvel D2™ Air D2™ Air X10 D2™ Air X15 D2™ Charlie D2™ Charlie D2™ Delta D2™ Delta PX D2™ Delta PX D2™ Delta S D2™ Mach 1 D2™ Mach 1 Pro D2™ Mach 2 D2™ Mach 2 Pro Darth Vader™ Darth Vader™ Descent™ G1 Descent™ G1 Descent™ G2 Descent™ Mk1 Descent™ Mk1 Descent™ MK2 Descent™ MK2 Descent™ Mk2S Descent™ Mk2S Descent™ MK3 - 43mm Descent™ MK3i - 51mm Edge® 1000 Edge® 1000 Edge® 1000 Edge® 1000 Edge® 1000 Edge® 1000 Edge® 1030 Edge® 1030 Edge® 1030 Plus Edge® 1030 Plus Edge® 1030, Bontrager Edge® 1040 Edge® 1040 Edge® 1050 Edge® 130 Edge® 130 Edge® 130 Plus Edge® 130 Plus Edge® 520 Edge® 520 Edge® 520 Edge® 520 Plus Edge® 520 Plus Edge® 530 Edge® 530 Edge® 540 Edge® 550 Edge® 820 Edge® 820 Edge® 820 Edge® 820 Edge® 820 Edge® 820 Edge® 830 Edge® 830 Edge® 840 Edge® 850 Edge® Explore Edge® Explore 1000 Edge® Explore 2 Edge® Explore 820 Edge® MTB Enduro™ Enduro™ Enduro™ 2 Enduro™ 3 Enduro™ 4 epix™ (Gen 2) epix™ (Gen 2) epix™ Pro (42mm) epix™ Pro (47mm) epix™ Pro (51mm) fēnix® 5 fēnix® 5 fēnix® 5 Plus fēnix® 5 Plus fēnix® 5S fēnix® 5S fēnix® 5S Plus fēnix® 5S Plus fēnix® 5X fēnix® 5X fēnix® 5X Plus fēnix® 5X Plus fēnix® 6 fēnix® 6 fēnix® 6 Dual Power fēnix® 6 Pro fēnix® 6 Pro fēnix® 6 Pro Dual Power fēnix® 6 Pro Solar fēnix® 6 Solar fēnix® 6S fēnix® 6S fēnix® 6S Dual Power fēnix® 6S Pro fēnix® 6S Pro fēnix® 6S Pro Dual Power fēnix® 6S Pro Solar fēnix® 6S Solar fēnix® 6X Pro fēnix® 6X Pro fēnix® 7 fēnix® 7 fēnix® 7 Pro fēnix® 7 Pro – Solar Edition (No Wi-Fi®) fēnix® 7S fēnix® 7S fēnix® 7S Pro fēnix® 7X fēnix® 7X fēnix® 7X Pro fēnix® 7X Pro No Wi-Fi fēnix® 8 AMOLED (43mm) fēnix® 8 AMOLED (47mm/51mm) fēnix® 8 Pro fēnix® 8 Solar (47mm) fēnix® 8 Solar (51mm) fenix® 9 - 43 mm fenix® 9 – 47 mm fenix® 9 Pro - 43 mm fenix® 9 Pro - 47 mm fenix® 9 Pro - 51 mm fenix® 9 Pro - Solar 47 mm fenix® 9 Pro - Solar 51 mm fēnix® Chronos fēnix® Chronos fēnix® E First Avenger First Avenger ForeAthlete 245 ForeAthlete 245 Music ForeAthlete 55 ForeAthlete 645 ForeAthlete 645 Music ForeAthlete 745 ForeAthlete 935 ForeAthlete® 735XTJ Forerunner® 165 Forerunner® 165 Music Forerunner® 170 Forerunner® 170 Music Forerunner® 245 Forerunner® 245 Forerunner® 245 Music Forerunner® 245 Music Forerunner® 255 Forerunner® 255 Music Forerunner® 255S Forerunner® 255S Music Forerunner® 265 Forerunner® 265S Forerunner® 55 Forerunner® 55 Forerunner® 570 - 42mm Forerunner® 570 - 47mm Forerunner® 645 Forerunner® 645 Music Forerunner® 70 Forerunner® 70 Forerunner® 735XT Forerunner® 735XT Forerunner® 745 Forerunner® 935 Forerunner® 945 Forerunner® 945 Forerunner® 945 LTE Forerunner® 955 Dual Power Forerunner® 965 Forerunner® 970 GPSMAP® 66i GPSMAP® 66i GPSMAP® 66s / 66st GPSMAP® 66s / 66st GPSMAP® 66sr GPSMAP® 67 GPSMAP® 86i GPSMAP® 86s GPSMAP® 86sc GPSMAP® 86sci GPSMAP® H1 Instinct® 2 Instinct® 2 Instinct® 2S Instinct® 2S Instinct® 2X Instinct® 3 – 45 mm, AMOLED Instinct® 3 – 45 mm, Solar Instinct® 3 – 50 mm, AMOLED Instinct® 3 – 50 mm, Solar Instinct® E – 40 mm Instinct® E – 45 mm MARQ® (Gen 2) MARQ® Adventurer (Gen 3) MARQ® Commander (Gen 2) – Carbon Edition MARQ™ Adventurer MARQ™ Adventurer MARQ™ Athlete MARQ™ Athlete MARQ™ Aviator MARQ™ Aviator MARQ™ Aviator (Gen 2) MARQ™ Captain MARQ™ Captain MARQ™ Commander MARQ™ Commander MARQ™ Driver MARQ™ Driver MARQ™ Expedition MARQ™ Expedition MARQ™ Golfer MARQ™ Golfer Mercedes-Benz Venu® Mercedes-Benz Venu® Mercedes-Benz Venu® 2 Mercedes-Benz Venu® 2 Mercedes-Benz Venu® 2S Mercedes-Benz Venu® 2S Montana 700 Montana® 700 Montana® 710 Oregon® 7 Series quatix® 6 quatix® 6X Rey™ Rey™ Rino® 7 Series Rino® 7 Series tactix® 7 tactix® 7 – AMOLED Edition tactix® 8 – 47 mm, AMOLED tactix® 8 – 51 mm, Solar Venu® Venu® Venu® 2 Venu® 2 Venu® 2 Plus Venu® 2 Plus Venu® 2S Venu® 2S Venu® 3 Venu® 3S Venu® 4 – 41 mm Venu® 4 – 45 mm Venu® Sq. Venu® Sq. Venu® Sq. Venu® Sq. Venu® Sq. 2 Venu® Sq. 2 Music Venu® Sq. Music Venu® Sq. Music Venu® Sq. Music Venu® Sq. Music Venu® X1 vívoactive® 3 vívoactive® 3 vívoactive® 3 vívoactive® 3 Mercedes-Benz® Collection vívoactive® 3 Mercedes-Benz® Collection vívoactive® 3 Music vívoactive® 3 Music vívoactive® 3 Music vívoactive® 4 vívoactive® 4 vívoactive® 4S vívoactive® 4S vívoactive® 5 vívoactive® 6 vívoactive® HR vívoactive® HR

Recent metric trend

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Snapshot dates
2026-10-27 → 2026-10-30