How much data Google Maps really uses
A full day of turn-by-turn navigation costs less than most travellers fear — it is the endless panning and Street View that add up. This separates the two.
Quick answer
- Turn-by-turn navigation uses roughly 3–10 MB an hour — far less than almost anything else on your phone.
- The real cost is browsing: panning for restaurants, loading place photos and Street View, together roughly 15–30 MB per 10 minutes.
- Download the city's offline map over Wi-Fi before you go and a whole trip stays in the low hundreds of megabytes.
Google Maps uses roughly 3–10 MB an hour while it is giving you turn-by-turn directions, which means two hours of navigating a day across a 7-day trip lands somewhere around 50–150 MB in total. That is an estimate drawn from ordinary use rather than a measurement from your handset, and it moves with the city, the density of the road network and how often you reroute.
Most travellers are surprised by that, because a map that sits open all day feels expensive. What actually happens is that once the route is calculated, the app pulls down a corridor of map tiles along it in one go and then barely speaks to the server again, apart from sending your position and refreshing traffic. Battery and data are not the same bill: the map is heavy on battery because of GPS and a lit screen, and light on data.
Rough figures, activity by activity
| What you are doing | Roughly how much | A 7-day trip at this rate |
|---|---|---|
| Walking navigation | Roughly 3–5 MB an hour | 2 hours a day ≈ 40–70 MB |
| Driving navigation | Roughly 5–10 MB an hour | 3 hours a day ≈ 105–210 MB |
| Panning around looking for food | Roughly 15–30 MB per 10 minutes | 15 minutes a day ≈ 160–320 MB |
| Opening photos on a place listing | Roughly 1–3 MB per place | 10 places a day ≈ 70–210 MB |
| Street View | Roughly 5–10 MB per look around | 3 looks a day ≈ 105–210 MB |
| Downloading one city's offline map | Roughly 100–400 MB, once | Done on Wi-Fi = nothing off your plan |
Every figure here is a planning estimate, not a measurement.
Read down the table and the shape of the problem changes. Navigation is the cheap part. The expensive part is the stretch before you have decided anything — standing outside a station, dragging the map around, opening one restaurant listing after another, reading reviews, then dropping into Street View to see what the shopfront looks like. Ten minutes of that costs more than an hour of driving directions.
Downloading offline maps properly
Offline maps are the highest-return two minutes you can spend before a trip. The one rule is to do it on Wi-Fi at home, because a single city can run to several hundred megabytes, and downloading it after you land means spending a large slice of your plan in the first minutes of the trip.
- 1Open your profile menuTap your profile picture at the top right of Google Maps and choose Offline maps. The path is identical on iOS and Android.
- 2Select your own areaTap Select your own map and drag the frame over the districts you will actually be in — include the airport and the route into town. A bigger frame means a bigger file, and the app tells you the size before you commit.
- 3Download on Wi-Fi onlyOn the Offline maps screen, open the gear icon and set Download preferences to Over Wi-Fi only, so the app never refreshes a saved area over mobile data while you are abroad.
- 4Save your places in advanceWhile you are still on Wi-Fi, search for the restaurants, hotels and stations you intend to visit and save them to a list. On the ground you open the list and tap navigate instead of browsing from scratch, which is the part that actually costs data.
The settings that actually move the needle
Beyond offline maps there are two or three switches worth flipping, and they are named differently on iOS and Android, which is why people hunt for them and give up.
- On Android, turn on Wi-Fi only under profile menu > Settings. With it on, Maps leans entirely on your saved areas whenever there is no Wi-Fi — ideal for wandering a city you already downloaded.
- iOS has no in-app Wi-Fi only switch. Go to Settings > Google Maps > Mobile Data and turn it off if you want to force it onto saved areas — remembering that search and fresh routing stop working until you turn it back on.
- Switch off Timeline or Location History if you do not use it. It uploads your position through the day — not much data, but it is traffic you are not getting anything back for while abroad.
- Leave Background App Refresh off for Maps on iOS, or turn off the app's Background data on Android, so it is not fetching anything while the phone is in your pocket.
Navigating when there is no signal at all
A saved area still gives you full turn-by-turn driving directions with no signal at all, because GPS is a one-way satellite receiver that owes nothing to the internet. The limitation is public-transport directions, and some walking routes, which still need a connection because timetables change constantly.
That is why we treat offline maps as a safety net rather than a strategy. They rescue you in a metro tunnel or up a mountain, but if you need to know which kitchen is still open at ten at night or when the next train leaves, you need a connection anyway. A small plan that genuinely works beats trying to travel entirely offline.
FAQ
Does leaving Google Maps open in my pocket all day burn data?+
If it is still in navigation mode it keeps refreshing traffic and continues to use roughly 3–10 MB an hour. If the app is merely open and not navigating, the data cost is close to nothing — the heavy bill there is battery, from GPS.
Do offline maps expire?+
Yes — a saved area expires after about a year and the app tries to refresh it as the date approaches. If you set Download preferences to Over Wi-Fi only, that refresh waits for Wi-Fi, which is exactly what you want.
Is Apple Maps lighter than Google Maps?+
For navigation the two sit in the same range — a few megabytes an hour. The difference that matters more is that downloading a whole city offline is not available on every iOS version of Apple Maps, so for trips where signal may vanish, Google Maps is usually easier to plan around.
How much of a 7-day plan should I set aside for Google Maps?+
With offline maps downloaded and places saved in advance, roughly 200–300 MB is comfortable. With nothing downloaded and a habit of browsing for somewhere to eat, budget roughly 700 MB to 1 GB. Put your own numbers into the data calculator to see the whole trip at once.
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