Description

This widget 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 also choose the all-numeric format of 12 or 13 digits which is 1m precision. 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”. You can also choose whether to display the grid reference over 1, 2 or 3 lines. The 2 & 3 line layouts generally allow a larger font to be used for the numbers - useful for old eyes! The display also shows the current GPS quality as seen by the device. This is indicated as None, Poor, Usable or Good. Pressing Menu will stop the widget updating and fix the displayed grid reference. 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 recommend you to have look at Chris's page. Widgets are designed to time out and return to showing the watch face. Sometimes the Grid Reference widget times out before it gets a GPS fix. In that case the best thing to do is start an activity (e.g. Run) and wait until it has GPS. Then go back to the Grid Reference and try again. The widget 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 widget on my vívoactive® HR and other devices in the simulator. Please contact me if you have any problems, comments or requests. Include your email address if you would like a reply. I have also made the app as a simple data field, you can find it at https://apps.garmin.com/en-US/apps/d56ff2c7-98d6-4390-8e99-4c844f1f32d1 Alternatively you can download it as a complex data field app. This works in exactly the same way as the simple data field but the font size and layout is slightly different, mainly with small data fields. You can find it at https://apps.garmin.com/en-US/apps/3b19825b-2021-44e2-81f7-62c87877a456 Thank you to Dave Fisher for asking about larger fonts and to Mark Livingstone for asking for Irish grid references. Disclaimer Please note that I can accept no responsibility for the correctness of the grid references shown. You should never rely on this widget alone for navigation purposes. To be safe, always understand how to navigate without your Garmin device.

What is new

Added support for latest devices. Built with SDK 9.2.0. (Version 2.3.8.d) Added support for latest devices. Built with SDK 9.2.0. (Version 2.3.8.c) Added support for latest devices. Built with SDK 9.1.0. (Version 2.3.8.b) Added support for new device. Built with SDK 9.1.0. (Version 2.3.8.a) Added numeric-only format. Built with SDK 8.4.1. (Version 2.3.8) Fixed crash on some devices. Built with SDK 8.3.0. (Version 2.3.7.f1) Added support for latest devices. Built with SDK 8.3.0. (Version 2.3.7.f) Added support for latest devices. Built with SDK 8.2.3. (Version 2.3.7.e) Added support for latest devices. Built with SDK 8.2.1. (Version 2.3.7.d) Added support for latest devices. Built with SDK 8.1.1. (Version 2.3.7.c) Added support for latest devices. Built with SDK 8.1.1. (Version 2.3.7.b) Added support for latest devices. Built with SDK 7.3.0. (Version 2.3.7.a) Added support for latest devices. Built with SDK 7.1.0. (Version 2.3.7) Added support for latest devices. Built with SDK 6.3.0. (Version 2.3.6) Added support for some new devices. Built with SDK 6.2.1. (Version 2.3.5) A new variant. Built with SDK 4.2.4. (Version 2.3.4). Added support for some new devices. Built with SDK 4.2.4. (Version 2.3.3). Added support for some new devices. Another attempt to fix GPS issues. Built with SDK 4.2.4. (Version 2.3.2). Yet another attempt at fix for GPS issues on some devices. Built with SDK 4.1.7. (Version 2.3.1). Another attempt at fix for GPS issues on some devices. Built with SDK 4.1.7. (Version 2.3.0). Added support for new devices. Implemented 1st attempt at fix for GPS issues on some devices. Built with SDK 4.1.6. (Version 2.2.0). Added support for Edge Explore 2. Built with SDK 4.1.4. (Version 2.1.5). Added support for new devices. Built with SDK 4.1.4. (Version 2.1.4). Added support for D2 Mach1. Changed message when no GPS signal. Built with SDK 4.1.2. (Version 2.1.3). Added support for the latest devices. Built with SDK 4.0.9. (Version 2.1.2.fv). Added support for the latest devices. Built with SDK 4.0.8. (Version 2.1.2.ev). New settings applied immediately when changed. Added support the latest devices. Built with SDK 4.0.3. (Version 2.1.2.d). Added support for D2 Air. (Version 2.1.2.c) Added support for Venu Sq. & Music (Version 2.1.2.b) Rebuilt with SDK 3.2.2 for the latest devices. (Version 2.1.2.a) Improved automatic grid choice algorithm. (Version 2.1.2) Fixed out of grid recognition bug. (Version 2.1.1) Added Irish grid reference calculations. (Version 2.1.0) Added choice of layout/font size. Rebuilt for latest models with SDK 3.1.9 (Version 2.0.0) Rebuilt for latest models with SDK 3.1.7 (Version 1.2.0.b) Fixed minor issue introduced at 1.2.0. (Version 1.2.0.a) Rebuilt for new models including fēnix 6, Venu and vívoactive 4 with SDK 3.1. (Version 1.2.0) Added support for MARQ Collection (Version 1.1.0.d) Rebuilt for new models with SDK 3.0.11. (Version 1.1.0.c) Rebuilt for more new and updated models and firmware. (Version 1.1a) Rebuilt for new and updated models and firmware. (Version 1.1)

Screenshots

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

Supported language (1)

English

Compatible devices (314)

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™ Bravo D2™ Bravo D2™ Bravo Titanium 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® 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® 3 fēnix® 3 fēnix® 3 fēnix® 3 fēnix® 3 fēnix® 3 fēnix® 3 HR fēnix® 3 HR 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® 230J ForeAthlete® 235J ForeAthlete® 630J ForeAthlete® 735XTJ ForeAthlete® 920XTJ Forerunner® 165 Forerunner® 165 Music Forerunner® 170 Forerunner® 170 Music Forerunner® 230 Forerunner® 235 Forerunner® 235 Forerunner® 235 Forerunner® 235 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® 630 Forerunner® 630 Forerunner® 645 Forerunner® 645 Music Forerunner® 70 Forerunner® 70 Forerunner® 735XT Forerunner® 735XT Forerunner® 745 Forerunner® 920XT Forerunner® 920XT Forerunner® 920XT 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® Crossover AMOLED 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 Oregon® 7 Series 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® vívoactive® 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

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Snapshot dates
2026-10-27 → 2026-10-31