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Use what3words

The what3words system turns geographic coordinates into 3 word addresses and vice-versa. They can be discovered and shared with our free mobile app or via the online map. The service has also been integrated into a variety of third party tools, apps and sites.

You’ll find them all listed below and can search for specific tools by industry sector or platform.

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Online API

The API is a few lines of code that can add 3 word address functionality to your existing app, map or site.

Read the API docs  |  Register for an API key

what3words map

The free map tool, at, lets you discover and share 3 word addresses quickly and easily.

Explore the map

what3words app

Our free app for iOS and Android puts all the useful map features in a handy package for smartphones.

Download for iOS and Android

Mobile SDK

This package provides the same service as the API but it can be installed on a smart phone and works entirely offline.

Find out more for iOS and Android  |  Get in touch to request the Mobile SDK

Server SDK

Businesses, NGOs and governments can use this service to run the what3words system from their own servers.

Find out more  |  Get in touch to request the Server SDK

Batch conversion

This tool offers conversions from coordinates to 3 word addresses and vice versa.

Start converting

GIS Plugins

All the features of what3words can be used via plugins for GIS platforms, such as ArcGIS, QGIS and Hexagon’s Smart M.Apps.

View more GIS tools in third-party products or get in touch to learn more.

Navmii gives you turn-by-turn driving and walking navigation. With traffic & hazard warnings, local search, driver analytics, downloadable maps and what3words, Navmii takes the hassle out of finding places.

Navmii is available for iOS & Android

Automotive & Transportation / Navigation & Mobility / Postal Services

Renting your place to holiday guests used to be complex and time consuming. The rise of Airbnb has turned the industry on its head, simplifying the process and turning rental properties into an additional source of income. Airsorted goes one step further, for homes in London, Edinburgh and Dublin, with a bespoke service that manages the whole rental experience for you.

Airsorted is available for Web

Travel & Tourism

With more than 10 million searches per day, DuckDuckGo provides quality results without tracking or profiling its users. It gets its information from the best sources, rather than from most sources. And now it has also become the first search engine to integrate what3words into its service, enabling turn-by-turn navigation to a 3 word address direct from the search bar.

DuckDuckGo is available for iOS, Android & Web

Miscellaneous / Navigation & Mobility / Search

Targeted at travellers and hikers, PocketEarth’s apps offer global travel guides and offline maps for every adventure. You can search and navigate to 3 word addresses around the world, and display the 3 word address for every location instead of GPS coordinates.

Pocket Earth is available for iOS

Navigation & Mobility / Travel & Tourism

This multi-modal transit app is the first to combine both public and private transport modes into one trip. Thanks to what3words integration, you can specify the 3 word start and end points of a trip, and display the 3 word address of any location on the map.

TripGo is available for iOS & Android

Automotive & Transportation / Navigation & Mobility / Travel & Tourism

Building on UNDP’s use of what3words in the field in many regions across Africa, the regional security team in Turkey are using it to communicate across their teams. Drivers and security team members have downloaded the free what3words application, which enables them to simply describe the exact location of assets, people and even any incidents that arise.

UN-ASIGN is available for iOS & Android

Emergency Services / Humanitarian

The what3words locator allows ArcGIS platform users to display the 3 word address for any location or search for a 3 word address, either individually or via batch conversion to and from coordinates. It makes full use of the Esri Geoinformation Model and is accessible online or offline, anywhere in the world.

Esri ArcGIS is available for Web


RouteXL is a route optimiser for multiple addresses. It finds the fastest route between destinations, sorting the stops in the optimal sequence for the easiest and fastest route. Users can now search using 3 word addresses, and find the best route between a number of precise locations. The combination of accuracy and speed can saves businesses time and money.

RouteXL is available for Web

Deliveries & Logistics / On demand delivery

FME is the world’s leading spatial data transformation technology. It’s the “go-to” software for anyone working with multiple data formats. By using what3words, users will be able to encode and decode what3words addresses to and from latitude,longitude coordinates, without writing any code.

Safe Software (FME) is available for Web & Desktop


Blackbay is a leading provider of mobile enabled solutions for the transport and logistics sector. They offer real-time track-and-trace services and on-the-road routing and scheduling. The what3words platform is fully integrated into Blackbay’s Delivery Connect service. With a 3 word address, items can now be sent to an individual’s precise location, rather than to an address.

Blackbay is available for iOS & Android

Deliveries & Logistics / Postal Services

The Helipaddy platform makes helicopter trip planning easy, with an extensive database of fully researched helicopter landing locations, navigation tools, travel guides and an active community and support portal. They have added what3words to their platform, so now all these locations are much easier to transcribe and share.

Helipaddy is available for iOS, Android, Web & Developers

Navigation & Mobility

The RioGo app let tourists, workers and athletes plan a journey across Rio de Janeiro during the Olympic Games. The what3words addressing system is integrated into the app and works alongside live transport feeds, helping users get from one 3-word location to another in the city.

RioGo is available for iOS & Android

Events / Navigation & Mobility / Travel & Tourism

A Hedonist’s Guide is a high-end travel guide and magazine exploring the best hotels, restaurants, bars, cafes, clubs, sights, shops and spas in 50 cities around the world. To ensure their travellers get to enjoy these places A Hedonist’s Guide have added 3 word addresses to every destination they list.

Hedonists Guide is available for Web

Travel & Tourism is one of the original online mapping services and still serves thousands of visitors every day with high quality maps. Streetmap have now integrated what3words, so you can search using 3 word addresses.

Streetmap is available for Web

National Infrastructure & Government

Yada has integrated the what3words service into their app, to ensure that guests can always find their way. 3 word addresses can be provided for every key location of an event – from a stately home front gate to the location of a beer tent in the middle of a field. Guests can see the address and get directions to the precise 3m x 3m square.

Yada is available for iOS & Android


Find out how to use what3words in your business: