GB Grid Converter

GB Grid Converter

Convert Grid References

1 ratings
52 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • August 1, 2010
  • June 20, 2026

Features

GB Grid Converter screenshot #1 for iPhone
GB Grid Converter screenshot #2 for iPhone
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About

This app converts British National Grid References to Latitude/Longitude coordinates and vice-versa. It supports both OSGB36 and WGS84 datums. You can view converted coordinates in Maps, send them to other apps, or copy them to your clipboard.

Convert British National Grid to Lat/Long
Convert Lat/Long to British National Grid
Supports OSGB36 and WGS84
View coordinates in Maps app
Send coordinates to other apps
Copy coordinates to clipboard
Fuzzy parsing for input
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What's New in GB Grid Converter

4.1

June 20, 2026

- See the grid reference of dropped pins in the map viewer

1

In-App Purchases

$10.00

GB Grid Converter Premium

Removes all advertising from GB Grid Converter.

User reviews

An indispensable, brilliant app

Quite simply a brilliant app. I’ve not found another app that does what this app does:
1) where are we? Gives you the Grid Reference
2) Where’s that on the map? In 1 click it shows you. Therefore, you can;:
3) Navigate to a GridReference
Brilliant! Thanks so much. An indispensable, brilliant app

W3W would be great

A fine app overall. The ability to directly reference What 3 Words from within the app would be exceptionally useful.

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Ii NF X-raysm ;(;;?4?3

Best App

For myself the OS app is essential for instant and accurate grid reference when recording wildlife sightings. Been using for many years wouldn’t be without it.

GPS

Love that I can get grit references without buying a satnav.

Developer apps

FAQ

What does the GB Grid Converter app do?

The GB Grid Converter app allows you to easily convert between British National Grid References (OS Grid Refs) and Latitude, Longitude coordinates. It supports both OSGB36 and WGS84 datums, providing you with accurate conversions for various mapping and navigation needs.

How accurate are the conversions?

The app provides conversions for both OSGB36 and WGS84 datums, which are standard coordinate systems. The accuracy of the conversion depends on the input precision and the underlying mapping data used by your device. It is designed for reliable conversion between these two systems.

Can I view the converted coordinates on a map?

Yes, after converting your coordinates, you can easily view them directly in the Maps app on your device. This allows for quick visualization of the location and further navigation or planning.

Is this app free to use?

The app is free to download and use, with the option for in-app purchases. This model allows users to try the core functionality for free while offering additional features or capabilities through optional purchases.

What kind of grid references can I input?

The app features fuzzy parsing logic, meaning you can input grid references in various formats. For example, it can understand inputs like "TQ 30267 76930" as well as more condensed versions like "TQ302769", making it convenient to enter coordinates.