We are often asked at Road XS: what is what3words? Some people even type give me three words or what the words into a search bar when they are hunting for it. The answer is simple. what3words lets you pinpoint any spot on Earth using just three everyday words.
The system divides the whole planet into a grid of 57 trillion squares, each measuring 3 metres by 3 metres, and gives every square its own three word address. That makes it far easier to share exactly where you are than a long street address or a string of coordinates ever could.
Below we explain how the tool works, why precise location matters for the vulnerable passengers our sector carries, where it genuinely helps, where it needs care, and how what3words inside Road XS gets drivers to the right doorstep every time.
Key takeaways
- what3words gives every 3 metre square on Earth a fixed three word address, so you can share an exact location in seconds.
- The free app works on iOS and Android and finds your address offline, which is ideal for parks, beaches and rural lanes.
- what3words reports that over 85 per cent of UK police, fire and ambulance services accept three word addresses.
- Rescue teams still advise giving extra detail, because similar sounding words can be misheard over the phone.
- Road XS uses three word addresses to pinpoint pickups, guide drivers and share a passenger location in an emergency.
What is what3words in simple terms?
what3words is a global addressing system that turns awkward map coordinates into three simple words. It splits the world into a grid of 57 trillion squares, each 3 metres across, and hands every square a unique three word address that is easy to say and share.
Unlike Google Maps or Apple Maps, which often need more detail to fix an exact point, what3words uses words that are quick to remember and pass on. That is why millions of people rely on it, including emergency teams who find three word addresses far faster for reaching someone in trouble.
As a location app, it beats a plain street address for precision, especially in remote places where roads may have no name or sign. You can find your current spot in the app or on the website, or jump straight to any three word address anywhere in the world.
An addressing system built for people
Traditional addresses and long coordinate strings are easy to muddle. Three word addresses are short, memorable and unique. Whether you are booking a taxi, marking a favourite spot or describing where to meet, what3words lets everyone share the same exact position with plain words that leave no room for doubt.
The tool slots into existing apps and services through its API, which widens its use cases and reach. From voice navigation on the road to public transport planning, it helps people share and understand precise locations without any confusion.
How does the three words app work?
Whether you call it what3words or the three words app, the idea is the same. The whole planet has been mapped into 3 metre squares, and each square carries a permanent three word address. Those words come from a fixed dictionary and stay tied to that square, so they never change over time.
Most people reach it through the free three words app on iOS and Android, or through the website. Type the three words into the search bar and it takes you to the exact 3 metre square you need. The address also converts to latitude and longitude through the API for other routing and mapping systems.
What is a three word address?
Picture the planet broken into a checkerboard of identical squares, each 3 metres by 3 metres. The what3words system gives every square a set sequence of words, creating an address like ///index.home.raft. It captures the same accuracy as coordinates while staying simple enough to read out loud.
Because the words are chosen by an algorithm, the first word, the second word and the third word carry no hidden pattern. That protects the security of the system and stops anyone guessing nearby squares. Each address is fixed, unique and free of the plural or similar sounding traps that catch out street names.
Why does precise location matter?
Accurate location is now a matter of safety, not just convenience. what3words reports that more than 85 per cent of British emergency services accept three word addresses to find people quickly, particularly where a normal address is vague or missing. That kind of precision can shape how fast help arrives.
Imagine being lost or hurt in a sprawling park, on a remote trail or in a new estate that maps have not caught up with. A three word address can be the difference between a long search and a fast rescue. For transport teams, that same accuracy removes guesswork from every journey.
The limits of traditional addresses
Street addresses have served us well for centuries, yet they show their age in a fast moving world. A single postcode can cover a wide area, entrances can be hard to spot, and similar sounding street names cause mix ups. The result is wasted time, wrong drop offs and, at worst, real danger.
Not everyone is comfortable with apps either, so traditional methods still matter for inclusivity. A three word address works best as an extra layer of clarity that sits alongside familiar landmarks, rather than a full replacement for the addresses people already know and trust.
Why it matters in emergencies
When every second counts, describing a location clearly is hard and stressful. Call handlers cannot always detect where you are and cannot receive a dropped pin. A three word address gives them one clear target to send help to, which is why so many services ask callers to share one.
Real rescues show the value. In 2019 the Scottish Ambulance Service used it to share the location of an injured hillwalker with the coastguard, and in 2020 Ambulance Tasmania located an injured bushwalker the same way. For people with no formal address at all, three words can be genuinely lifesaving.
Benefits for businesses and delivery services
Beyond emergencies, three word addresses tidy up the last mile of delivery. Domino's uses the system to reach the right door, and brands from Airbnb to ride hailing services point customers to an exact entrance rather than a rough street. That accuracy lifts both efficiency and satisfaction.
Breakdown and recovery teams such as the AA use it too, since around 40 per cent of members who break down away from home struggle to describe where they are. For any operator running service areas across a wide patch, precise pickups save miles, minutes and fuel.
What are the main features?
The app is free for individuals and works offline, so it still finds your address in a national park, on a campsite or on a beach with no signal. It supports more than 50 languages and lets you find, share and navigate to any address. Businesses pay for commercial licences to build it in.
Does it work with navigation apps?
Yes. You can find an address in the app, then send it straight to Google Maps for turn by turn directions. Simply drop the three words into a navigation app search bar. Browser add ons for Chrome and Firefox make this even quicker on a desktop, so location sharing stays smooth across platforms.
Can you use voice navigation?
Where hands free operation matters, what3words supports voice. You can speak a three word address into a navigation app or voice assistant and move from finding the spot to guided directions without touching the screen. A compass mode also helps you keep your bearings in areas with patchy connectivity.
Saving your favourite locations
The app remembers places as well as finding them. AutoSuggest helps you save meaningful spots, from a quiet entrance for a passenger to a precise stop on a route. Taxi and transport teams can then drop people exactly where they need to be rather than at the nearest kerb.
How does Road XS use what3words?
Our customers use what3words inside Road XS in several practical ways. It shows a passenger and driver location in case of an accident, pinpoints pickups and drop offs, guides drivers through the driver portal app, and feeds accurate mileage and time estimates.
The technology takes a lot of the fear out of directing volunteer drivers to passengers in rural spots. They simply navigate to the exact square and lean on extra detail from the transport office if they need it. That confidence matters when many drivers are giving their own time.
Google Maps is not always spot on with new housing or island coverage, as our teams find on places like Guernsey. The what3words layer helps us hold accuracy and smooth out any routing snags. It has been a popular part of Road XS for years, and many staff now use the app in daily life too.
If you are weighing up better tools for your service, our guide to transport management software and our community transport booking software show how accurate location sits inside a wider booking and routing workflow.
Is what3words always reliable?
It is a powerful tool, but no tool is perfect, and honesty serves passengers better than hype. Mountain rescue teams, including the Lake District Search and Mountain Rescue Association, have warned that mishearing or misspelling a word can send responders to the wrong square. If someone misreads the 3rd word, the location can shift a long way.
The practical answer is to read every word back carefully and share extra detail such as a road name or landmark alongside the three word address. Used that way, these three words app searches and the address they produce become a helpful layer rather than a single point of failure.
It is also worth knowing that Advanced Mobile Location, or AML, is now built into smartphones in the UK and many other countries. AML can pass a caller location automatically on a 999 call, so what3words works best as one accurate option among several, not the only one you rely on.
What is the future of what3words?
What3words Limited, based in London, keeps growing its reach through a simple premise. As smartphones and connected services spread, the need for a precise, shareable location system only rises, and three word addresses fit neatly into apps, vehicles and public services alike.
Its reach already stretches into places that traditional post struggles to serve. Mongolia adopted it for postal deliveries, luxury car makers such as Mercedes Benz have built it into navigation, and travel guides like Lonely Planet use it to mark points of interest for visitors across the globe.
Because developers can tap the API, the system keeps spreading across logistics, online retail, automotive, mobility and travel. For transport operators, the direction of travel is clear. Accurate location is becoming a baseline expectation, and tools that deliver it will stay woven into everyday transport in practice.
Frequently asked questions about the three words app
What is a what3words address?
Every 3 metre square on Earth has a fixed three word address, such as ///index.home.raft. You share those three words and anyone with the app or website can find that exact spot, with no street name or coordinates needed.
Is the what3words app free?
Yes. The app is free for individuals on iOS and Android, and emergency services use it at no cost. Businesses that build three word addresses into their own systems pay for commercial API access instead.
Does what3words work offline?
Yes. The app finds and shows your three word address using your phone GPS, so it works without a data signal. You do still need phone signal to read that address to a 999 call handler, since the app cannot send it for you.
How do people usually search for what3words?
You will see it written in many ways. Common searches include give me three words, the three words app, these three words app, 3 word words and what the words. They all point to the same free tool that turns a location into three simple words.
What do the three words in an address mean?
An algorithm picks the words, so the first word, second word and third word have no hidden meaning. Because a wrong 3rd word can point somewhere else entirely, it is worth reading each word back slowly when you share an address by phone.
Is what3words reliable in an emergency?
It helps call handlers find people fast, which is why most UK services accept it. Rescue teams still advise sharing extra detail such as a landmark or road name too, because similar sounding words can be misheard under pressure.
How does Road XS use what3words?
Road XS uses three word addresses to pinpoint pickups and drop offs, guide drivers through the driver portal and share a passenger location if there is an accident. It keeps routing accurate even where standard maps fall short.
With three simple words, the world becomes easier to navigate, share and reach safely. For the people our sector carries, that clarity is not a gimmick. It is a quiet way to make sure the right vehicle turns up at the right door, first time, every time.
