# GB Grid Converter — Convert Grid References

> Converts British National Grid References to Latitude/Longitude coordinates. (iPhone/iPad app by Geospike Pty Ltd.)

- Source: https://appshunter.io/ios/app/gb-grid-converter/id382369923 (this page in markdown: same URL + `.md`)
- Developer: [Geospike Pty Ltd](https://appshunter.io/developer/500622151)
- Category: Navigation, Travel
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 54 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.6 · 10 MB
- Languages: American English
- Released: 2010-08-01
- Data updated: 2026-09-02
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/gb-grid-converter/id382369923/reviews.md

## What is GB Grid Converter?

Easily convert between British National Grid References (OS Grid Refs) and Latitude, Longitude coordinates (both OSGB36 and WGS84 are supplied).

Then, easily view the converted coordinate in the Maps app, or send it to GPS Log (our app for recording your travels).  Or copy to the clipboard using the standard iPhone functions.

Fuzzy parsing logic allows you to input coordinates in a variety of ways, like "TQ 30267 76930", and "TQ302769".


If you have any problems using this software, please contact us by email: support-at-gpslog.com so we can work with you to solve the problem.  Issues left as reviews are difficult to address.

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| GB Grid Converter Premium | $10.00 | one-time |


## Recent user reviews (10 of 54)

All indexed reviews: https://appshunter.io/ios/app/gb-grid-converter/id382369923/reviews.md

### 5/5 — An indispensable, brilliant app

*2024-06-26, version 3.0*

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

### 4/5 — W3W would be great

*2023-03-24, version 2.4*

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

### 3/5 — .

*2021-09-11, version 2.4*

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

### 5/5 — Best App

*2021-06-17, version 2.4*

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.

### 5/5 — GPS

*2021-05-23, version 2.4*

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

### 4/5 — GB converter

*2021-05-13, version 2.4*

Straightforward to use. Handy when I’ve screenshotted the wrong compass app.

### 5/5 — Love the app.

*2020-10-02, version 2.4*

Works well. I enjoy using it as one of my tools. Very handy.

### 1/5 — Drop pin

*2020-08-10, version 2.4*

When adding a drop pin it dose not give you a TQ anymore, unless you are at that location

### 3/5 — sound problems

*2020-04-30, version 2.4*

using the app i have no sound , which is annoying when driving to a grid reference

### 5/5 — Versatile

*2018-12-23, version 2.4*

Very useful & to use in conjunction with sat navigation programs

## Frequently asked questions about GB Grid Converter

### 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.

## Version history (last 5 releases)

### 4.1 — 2026-06-20

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

### 4.0 — 2026-05-25

- Improved support for latest OS versions and features

### 3.2 — 2024-07-14

- Minor bug fixes

### 3.1 — 2024-06-28

- Dark mode

### 3.0 — 2024-06-24

- Rebuilt for current operating system versions

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## More apps by Geospike Pty Ltd

- [GPS Log](https://appshunter.io/ios/app/gps-log/id305578954)
- [GPS Log LITE](https://appshunter.io/ios/app/gps-log-lite/id306260006)
- [DMS Converter](https://appshunter.io/ios/app/dms-converter/id387618784)
- [Geospike](https://appshunter.io/ios/app/geospike/id500622128)
- [Train Counter](https://appshunter.io/ios/app/train-counter/id564463386)

All apps by Geospike Pty Ltd: https://appshunter.io/developer/500622151

## Related topics

[gridpoint gb](https://appshunter.io/ios/topics/gridpoint-gb) · [gbs coordinate](https://appshunter.io/ios/topics/gbs-coordinate) · [osgb](https://appshunter.io/ios/topics/osgb) · [grid coordinates](https://appshunter.io/ios/topics/grid-coordinates) · [gps coordinates grid](https://appshunter.io/ios/topics/gps-coordinates-grid)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-02.*