Google Maps in Japan: Trains, Station Exits and Offline Mode Explained (2026)

Google Maps in Japan is still the number-one tool for getting around — if you know how to read it. Between JR routes, subway lines, station exit numbers, platform numbers and even which train car to board, the app knows almost everything. But only when it has a signal. This how-to guide shows you how to get the most out of Google Maps in Tokyo, Kyoto or Osaka, and why offline mode never replaces a real data connection.

Reading a JR, subway and bus route in Google Maps

In Japan, Google Maps covers every rail network, which makes it the go-to app for planning each trip. When you enter a start point and a destination, the app automatically compares JR (Japan Railways) lines, private subways and buses, then ranks the options by duration, price and number of transfers. For a Tokyo–Kyoto run, it will suggest the Tokaido Shinkansen operated by JR Central, with the exact fare (around 13,320 yen reserved) and a precise departure time.

The key is understanding the colour code. Each line appears in its operator's official colour: green for JR East's Yamanote in Tokyo, orange for the Chuo, magenta for Tokyo Metro's Oedo. The app reuses those colours and shows each line's logo, exactly like the signs inside the station. That tells you which platform to head for without reading a single kanji.

Another strong point is the split between companies. A single trip can mix a JR line and a private subway such as Tokyo Metro or Toei, which sometimes means tapping through a fare gate again and paying again. The app flags this by breaking the route into coloured segments, with the price of each leg. You avoid the nasty surprise of a fare gate rejecting your Suica card for lack of balance.

For buses, often dreaded by travellers, Google Maps does well in big cities like Kyoto, where the municipal bus network serves most temples. The app shows the line number, the exact stop and the departure time. In Kyoto, where bus 100 and bus 206 reach the most visited sites, that's a real time-saver. In rural areas, bus schedule coverage is patchier, so always keep a buffer.

Station exits, platform and car: the details that matter

This is where the app becomes genuinely impressive in Japan. Major stations are true labyrinths: Shinjuku Station, the busiest in the world with roughly 3.5 million passengers a day, has more than 200 exits. Taking the wrong one condemns you to a 15-minute underground walk to get back on track. Google Maps solves this puzzle by giving the exact exit number — "Exit A16" or "South Exit" — to reach your destination by the shortest route.

These exit numbers match the physical signs in the station exactly. When the app tells you to aim for the New South Gate at Shinjuku to reach a hotel on the Takashimaya side, you simply follow the yellow signs bearing that name. That detail turns an intimidating station into a signposted path — provided you have the data to load the info at the right moment.

On some lines, Google Maps goes further and suggests which car to board to end up closest to your transfer or exit. On the Yamanote or in the Tokyo subway, boarding car 3 instead of car 10 can save you two minutes of walking on the arrival platform. The app shows this as a small train icon with the recommended position.

For the Shinkansen, reading the platform is essential. The app shows the departure platform, but always check whether your ticket is for a reserved car (指定席) or a non-reserved one (自由席), because the queues on the platform are separate and marked on the floor. The app doesn't handle your seat reservation: for that, use the JR machines or the official app. If you travel a lot by train, our article on staying connected on the Shinkansen explains how to stay online at 300 km/h.

Live times, delays and transfers

Japan's rail network is famous for legendary punctuality — an average delay of less than one minute per year on the Tokaido Shinkansen. But disruptions do happen: typhoons, passenger incidents, heavy crowds during Golden Week. Google Maps shows this in real time, as long as you're connected. You see whether your train is on time, delayed, or if a line is suspended, with a red banner and an alternative route suggestion.

This live feature is especially useful for tight transfers. In Tokyo, switching from the Yamanote to the Marunouchi at Tokyo Station sometimes means crossing several levels. If your first train runs three minutes late, the app automatically recalculates the transfer and offers the next train, with the new arrival time. Without data, the app stays stuck on the stored theoretical schedule, which can be wrong.

Live times also cover how often trains run. Off-peak, some subway lines come every 8 to 10 minutes; missing a transfer then seriously changes your arrival time. Seeing the next departure live lets you adjust your pace — linger two more minutes in a konbini, or pick up the pace toward the platform.

A word on walking: the app combines train and on-foot routing, including inside some stations and shopping centres. GPS stays accurate above ground but can drop in the basements and long underground corridors of Tokyo. As soon as you step back into the open air, your position re-locks within seconds — again, with a live connection.

Offline mode: what works and what doesn't

Here's the point many travellers discover too late. Google Maps lets you download offline maps: you choose an area, the app saves the map on your phone, and you can then check streets, shops and points of interest with no signal. Handy for scouting a neighbourhood or placing a restaurant. Downloading an area like central Tokyo weighs around 30 to 50 MB.

But the limit is brutal on one essential point: offline mode gives no public-transport directions at all. Without a connection, you lose train times, exit numbers, transfers and live data. Only driving directions can still be calculated offline. In other words, the most useful function of the app in Japan — planning your train and subway trips — depends entirely on your data.

GPS itself works without data, because it relies on satellites, not the mobile network. So you'll see your blue dot move on a downloaded map. But a blue dot creeping along a frozen map won't tell you which train to catch, at what time, or which exit to leave by. That's the difference between knowing where you are and knowing how to get where you want.

Some people count on the free Wi-Fi in stations and konbini to fill the gaps. In practice, those networks often need a sign-up, cut out the moment you walk, and don't exist between stations. The result: you end up hunting for a route at the worst possible moment, stuck on a platform. A real, permanent connection remains the only reliable option, as our comparison of eSIM versus Pocket WiFi lays out.

"Offline, Google Maps knows where you are, but no longer how to move you."

How much data Google Maps uses in Japan

Good news: the app is surprisingly frugal. In active routing, with the screen on and GPS tracking, it uses about 3 to 7 MB per hour. A one-off route search, without continuous guidance, weighs only a few hundred kilobytes. Even using it heavily all day to chain trips together, you rarely go past 30 to 40 MB.

Over a two-week trip, Maps rarely weighs more than 1 to 2 GB of your total usage. What really inflates your volume is social media, streaming and video calls, not mapping. To size everything precisely by profile, see our guide to data usage on a Japan trip, which breaks down each app in gigabytes.

Network quality matters too. Japan enjoys excellent 4G and 5G coverage: NTT Docomo covers 99.9% of the territory, including the Tohoku countryside and the main islands. So the app loads almost instantly everywhere in the city, at speeds that often top 50 Mbps. To see where 5G is live, check our take on 5G coverage in Japan.

Which eSIM plan to pick for stress-free Maps

Since Google Maps needs steady data for its most useful features, the real question is which plan to choose. At PlanJapan, the classic data catalogue comes in 10 GB, 20 GB and 50 GB, valid for 30 days after activation. For most travellers who use Maps, messaging and a bit of social media, classic data is plenty — no need to aim for unlimited if you don't stream.

Here's how we recommend choosing based on trip length:

If you really don't want to watch your usage — because you stream, share your connection or work remotely from a café — the unlimited plan exists, with any duration from one day. It includes hotspot, up to 10 GB per day at full speed. But for a Maps-and-daily-life setup, classic data stays the logical, most economical choice.

Either way, the PlanJapan eSIM is data only: you keep your personal number on your original SIM for WhatsApp, iMessage and your usual texts, in dual-SIM. Activation takes 5 minutes by QR code, right after landing at Narita or Haneda. To time activation well, read our guide to the Narita and Haneda airports. And to fine-tune your volume, our article on how many GB you need for Japan is spot on.

FAQ

Does Google Maps work offline in Japan?

Partly. You can download offline maps to check streets and shops without a signal, but Google Maps calculates no train, subway or bus directions offline. Only driving directions stay available. For public transport, an active data connection is essential.

How much data does Google Maps use on a Japan trip?

Very little: about 3 to 7 MB per hour in active routing, and a few hundred kilobytes for a simple search. Over two weeks, Maps rarely exceeds 1 to 2 GB. Social media and streaming are the heavy items, not mapping.

Does Google Maps show station exit numbers?

Yes. In major stations like Shinjuku, Tokyo or Osaka, Google Maps gives the exact exit number to aim for, aligned with the physical signs. This feature saves precious time in stations that sometimes have more than 200 exits.

Can you see live train times?

Yes, with an active connection. Google Maps shows delays, line suspensions and recalculates transfers live. Without data, the app is limited to stored theoretical schedules, which don't reflect current disruptions.

Is free Wi-Fi enough to use Google Maps?

Rarely. Wi-Fi in stations and konbini often needs a sign-up, cuts out the moment you walk, and doesn't exist between stations. For reliable use on the move, a data eSIM offers a permanent, uninterrupted connection.

Which eSIM plan should I pick for Google Maps?

For a Maps, messaging and light social media setup, a classic data eSIM is enough: 10 GB for a short stay, 20 GB for a week, 50 GB for ten days or more. Unlimited is only worth it if you stream or share your connection non-stop.

Do I need to keep my phone number for Google Maps?

Google Maps doesn't need your number, only data. The PlanJapan eSIM is data only, so you keep your personal number on your original SIM for WhatsApp and texts, while the eSIM handles the internet connection in dual-SIM.

Official sources: Google Maps help on offline maps and JR East (train and station information).