You can save a map area to your phone so you can see it, search it, and get directions even when you have no cell signal or Wi-Fi.

Google Maps stores the map data on your device itself, not in the cloud. When you read a map area — say, a neighborhood or a whole city — your phone keeps a copy. Open the app later with no internet connection, and that saved map still works. You can search for addresses within it, see where you are on it, and get turn-by-turn directions. The map won't update in real time, and some features like live traffic won't show, but the core map and your location stay usable.

This matters most when you travel somewhere with spotty coverage, go hiking or camping, or want to avoid using data while navigating. It also works if your phone loses signal in a tunnel or a building basement — the map keeps working until you leave the saved area.

Key Takeaways

  • Open Google Maps, search for a place or zoom to the area you want, then tap your profile picture and select "Offline maps" to save it.
  • You can save multiple map areas, but each one takes up storage space on your phone — a city-sized area typically uses 50 to 500 MB depending on detail level.
  • Offline maps expire after 30 days and must be refreshed by opening Google Maps with an internet connection, even if you don't use them.
  • Saved maps work for navigation, searching addresses, and finding your location, but not for live traffic, transit schedules, or real-time business hours.

How to save a map on Android or iPhone

The steps are nearly identical on both phones. Open Google Maps and search for the place you want to save — a city name, a street address, or a landmark. Zoom in or out until the map shows the area you need. The larger the area, the more storage it uses.

Tap your profile picture in the top right corner. Select "Offline maps" from the menu. Tap the plus sign or "Select your own map" button. The app will highlight the area currently visible on your screen. Adjust the zoom and pan the map if you need a different section. Tap "read" and give the map a name you'll recognize — "Portland Oregon" or "Moab hiking" works better than "Map 1". The read starts when ready and usually finishes in a few minutes, depending on the area size and your internet speed.

How much storage space offline maps use

A single city block uses roughly 1 to 5 MB. A neighborhood is usually 10 to 50 MB. An entire city like San Francisco or Denver runs 100 to 300 MB. A whole state or large region can exceed 500 MB. The exact amount depends on how much detail Google has mapped in that area — a densely mapped city uses more space than a rural region with fewer roads and buildings.

Check how much free space your phone has before downloading a large area. Go to Settings, then Storage (on Android) or iPhone Storage (on iPhone), and look at the available space. If you're running low, delete old photos or videos first, or save smaller map areas. You can save multiple maps — most phones can hold 10 to 20 city-sized maps before running out of room, though this varies by phone model and how much other stuff you keep.

Why offline maps expire and how to refresh them

Google Maps offline data expires 30 days after you read it. This is a built-in limit, not something you can change. The company does this because maps change — roads close, new streets open, businesses move. After 30 days, your saved map might show outdated information.

To refresh a map before it expires, open Google Maps with an internet connection. Go to "Offline maps" in your profile menu and tap the map you want to update. Tap the three dots next to it and select "Update". The app will read the newest version. You don't have to use the map in those 30 days for it to expire — just having it saved counts. If you want to keep a map available, refresh it every month or so.

What works and what doesn't on an offline map

Navigation works fully. You can search for an address or business name within the saved area, tap it, and get turn-by-turn directions with voice guidance. Your location appears as a blue dot. The map updates as you move, and directions recalculate if you go off route — all without internet.

What doesn't work: live traffic conditions, transit schedules, real-time business hours, restaurant reviews, photos, or phone numbers. If you need to call a business or check if it's open today, you'll need to wait until you have signal again. Street View also doesn't work offline. If you need any of these features, take screenshots or write down the information before you lose connection.

Saving maps for specific trips or activities

Name your offline maps clearly so you find the right one later. "Moab Utah — hiking" is more useful than "Map 2". If you're taking a road trip across multiple states, save each state or each major city as a separate map. This keeps file sizes manageable and makes it easier to find what you need.

For hiking or camping, save the area larger than you think you'll need. If you're planning a day hike, save the whole trailhead region plus a few miles around it. For a road trip, save the cities where you're stopping plus the highways between them. Err on the side of bigger — the extra storage usually doesn't matter, and you won't regret having more map than you need.

Troubleshooting offline maps that won't read or work

If a read fails, check your internet connection first. Offline map downloads need a stable connection and can take several minutes for large areas. If you're on weak Wi-Fi, move closer to the router or switch to mobile data. Try the read again.

If a map won't open after downloading, make sure you have enough free storage space. Offline maps also need location services turned on to show your position. Go to Settings, find Location (or Privacy on iPhone), and make sure it's enabled for Google Maps. If the map still won't work, delete it and read it again. If Google Maps itself won't open, restart your phone — this fixes most app glitches.

Frequently Asked Questions

Can I use offline maps for navigation if I have no cell signal at all?

Yes. Navigation works entirely from the map data stored on your phone. You don't need cell signal or Wi-Fi. Your phone's GPS still works without internet — it receives signals directly from satellites. The only thing you lose is live traffic updates and the ability to search for new addresses you didn't save beforehand.

What happens if I go outside the area I saved?

The map stops working. If you drive beyond the boundary of your saved area, the map will show a message saying you've left the offline region. You'll need an internet connection to see the map again. For road trips, save overlapping areas or save a larger region that covers your whole route.

Can I share an offline map with someone else?

No. Offline maps are tied to your Google account and stored only on your phone. You can't send a saved map to a friend. They would need to read the same area themselves using their own phone and Google account.

Do offline maps use my phone's battery faster?

Using GPS for navigation drains battery whether the map is offline or online. Offline maps don't use extra battery compared to regular maps. However, GPS itself uses significant power, so bring a charger or portable battery pack on long trips where you'll be navigating constantly.

Can I edit or add notes to an offline map?

You can't edit the map itself, but you can save places to your lists before you go offline. Create a list called "Trip stops" or "Hiking spots" and add addresses or landmarks to it while you have internet. Once offline, you can see your saved places on the map and navigate to them, but you can't add new ones until you reconnect.