The what3words system splits the world into 3 m squares and gives each square a fixed three-word address.
The idea is simple: turn hard GPS numbers into short words people can say, write, and remember. Each three-word combo points to one exact 3×3 meter spot on Earth. The app and website let you find, share, and navigate to those spots with a tap. Below, you’ll see how the system assigns words, how to use them with maps and cars, and where the method shines or stumbles.
How The What3words Address System Works In Practice
Every spot on the planet sits inside a small square. What3words assigns one set of words to each square; the words never change. When you type or speak a three-word address, the app converts it to standard coordinates behind the scenes. That conversion goes both ways: drop a pin and you’ll see the matching words. For a plain overview from the company, see the about page.
Core Building Blocks
Under the hood, the grid covers land and sea. Words are mixed across the globe so that similar phrases land far apart. That pattern helps catch mistakes in speech or spelling because a wrong word often points to a place thousands of miles away, which is easier to spot during a call or chat.
| Feature | What It Means | Where It Helps |
|---|---|---|
| 3×3 m Squares | Tiny, fixed tiles mapped over the whole world. | Pinpoints gates, trailheads, entrances, and drop-off spots. |
| Three-Word Address | One unique phrase per square, set for good. | Easy to say on a call or print on a sign. |
| Word Distribution | Similar phrases placed far apart. | Reduces mix-ups when a word is misheard. |
| Language Packs | Local word lists in many languages. | People use short, familiar words in their own tongue. |
| Offline Search | App can work without data once the map tiles and word list are on device. | Spotty reception in mountains or rural roads. |
| Coordinates Bridge | Words ↔ latitude/longitude conversion. | Works with satnav apps, GIS tools, and delivery software. |
Typing, Saying, And Sharing A Three-Word Address
Open the app, tap the square you need, and copy the three words with the dots in between. Say them out loud with the dots: “word dot word dot word.” When sending by text, keep the dots and avoid extra spaces. If the app suggests a different place than you expect, check the map preview and pick the right one.
Setup, Languages, And Offline Use
You can switch languages inside the app. The words are not direct translations, yet each language has its own stable word list. Dense cities get shorter words to speed up entry; remote oceans get longer ones. Many users switch languages during a trip so locals can read the phrase in their tongue.
Working Without Data
When coverage drops, the app can still show squares and words once you’ve loaded the area. You can save screenshots or write down the words for later. For road trips, many drivers preload regions along the route so they can read out exact drop points on arrival.
Using Three-Word Addresses With Other Maps
The app can hand off to Apple Maps, Google Maps, or Waze. Tap a three-word address, choose your map app, and start turn-by-turn directions. Many car brands include built-in search for the words as well. If a form only accepts standard coordinates, copy the latitude and longitude shown on the screen instead.
Delivery, Field Work, And Events
Couriers add doors, gates, and lockers as three-word entries to cut wasted miles. Field teams save squares for valves, poles, and trail markers. Event planners print the words on passes and staff sheets so crews meet at the right side-door or loading bay on time.
Can Emergency Call Centers Use Three-Word Addresses?
Many control rooms accept them as one way to find callers who can’t describe a place. Call takers repeat the words back, check the map preview on their console, and paste the coordinates into dispatch tools. A simple primer from the police in England explains this method in plain terms: see the what3words system FAQ.
Strengths And Gaps For Safety Use
Plain words are easier to speak than long strings of digits, which helps stressed callers. Spelling slip-ups can still send crews far off course, yet the preview map often shows a location that makes no sense for the call, which prompts a quick double check. Some mountain rescue teams prefer a mobile location link or raw coordinates when a data connection exists. Treat three-word phrases as one tool among many, not a single silver bullet.
How To Share Precisely Every Time
Accuracy lives in the detail. Read all three words, include the dots, and confirm the map view. Swap screenshots when possible. In noisy spots, text beats voice. When you print signs or passes, add both the three words and the standard coordinates under them. That tiny redundancy saves time when one method fails.
What3words App For Addresses — Real-World Uses
This section shows where the method speeds up common tasks. Each use case pairs tight instructions with small tips that avoid mistakes.
Home And Business
Share the exact door or gate for guests and couriers. Apartment blocks with mirrored corridors benefit the most: share the side entrance square rather than the street center. Landlords map meters and valves so maintenance arrives ready.
Outdoor, Parks, And Trails
Give the trailhead or the safe pull-in bay, not just the park name. Camp groups print the three words on wristbands. Guide teams swap squares for viewing points, bridges, and shelters when storms roll in.
Events And Venues
Use the side-door square for bands and gear. Mark the merch table, first aid tent, and media desk. If a stadium has many gates, print the exact gate square on tickets so late arrivals don’t clog the wrong turnstile.
Privacy, Data, And Control
The app can work with only the squares you view. You choose when to share location and with whom. Autosuggest can use your device position to sort results, yet you can switch that off or deny location permission. For sensitive tasks, send the words through end-to-end channels and keep shared links short-lived.
Pros, Limitations, And When To Pick Another Method
No single addressing method fits every day. The three-word model shines when a place lacks a street address or when you must call out a side entrance with no street number. It stumbles when a letter is misheard or when a caller has no word list in their language. If data is strong, a live “share my location” link can beat any manual phrase. In mapping or survey work, raw coordinates stay the standard.
| Situation | Best Pick | Why It Works |
|---|---|---|
| Rural gate with no street number | Three-word address | Clear voice-friendly reference to a precise spot. |
| Live tracking with data signal | Secure location link | Updates in real time for moving targets. |
| Engineering or survey task | Latitude/longitude | Standard format for GIS and CAD software. |
| Hiking call with weak signal | Saved words + screenshot | Works offline and avoids spelling slips. |
| International partners on mixed devices | Share both words and coords | Gives two paths to the same square. |
How It Compares To Street Addresses And Plus Codes
Street names and numbers point to buildings, not entrances. Big sites can have many doors along one road; a driver may still circle. The three-word model points to one square at a time, so you can share the staff door, the south gate, or the lay-by outside a barn. Plus Codes compress coordinates into letters and digits; those fit well inside Google tools and send cleanly in SMS where autocorrect can mangle words. Words shine during a phone call because they are short and easy to repeat. Codes shine in forms and spreadsheets because they sort neatly and carry a clear structure. If you work with crews that live inside Google tools, codes may be handy. If your team trades locations by voice during busy shifts, words may land better. In high-stakes work, share both when possible: three words for speech and the matching latitude/longitude for system fields.
Common Mistakes And Quick Fixes
Dropping The Dots
Leave the dots in place. They separate the words and help software detect the address.
Wrong Language Setting
If a friend shares Spanish words and your phone is set to English, you’ll see a new square in a different country. Switch your app language to match the sender, then copy the coords for your map app of choice.
Skipping The Map Preview
A two-second glance prevents long detours. If the square lands in the ocean yet you’re downtown, you’ve heard or typed a word wrong. Pick from the suggestions that match the city you expect.
Hands-On Tips For Everyday Use
- Save home, work, and a safe meet spot as favorites.
- Print the three words on delivery notes and building directories.
- Teach kids to read the words with dots and to show the map preview.
- Add both words and coords to any laminated trail sign.
- When sending by voice, spell the tricky word, then send a text to confirm.
Method And Scope
This guide draws on public product pages, police guidance, and long-running debates among rescue teams and security researchers. The goal is to help readers use three-word addresses with care across phones, cars, and field work.