I’m trusting google maps, seems the only way to go

Do you use a wheelchair?

If so, you can ask station staff to guide you to the exit nearest where you want to go (ie when getting off the train, tell them where you want to go to and they should guide you to the nearest exit).

Also, each subway station should have a map of the station layout on the website. Not likely that useful when on the go, but might be helpful for planning your day.

I’ve had very good luck with Google Maps.

However, recently I’ve noticed that when I specifically ask it for “Wheelchair accessible” directions, it *sometimes* gives me only needlessly long/circuitous directions. I have no idea why that started happening, but when it does, I usually just revert to “Best route” instead. It seems the vast majority of stations are wheelchair-accessible now, so I haven’t run into problems.

You should download the Tokyo Metro for Tourists app. What it has is 3D maps of all stations and it shows the accessible route to the surface. Unfortunately Google maps doesn’t necessarily show all the exit numbers but it is possible to get a reasonable idea of where you will end up. One other word of warning. Check the 3D maps carefully to see if the route has a stairlift because these are not passenger operated. We found one at Ginza and we had to struggle up the stairs because we couldn’t make ourselves understood. Jimbocho station Shinjuku line is a bit of a challenge as you have to go 500metres along an underground passage, go through the Hanzamon line ticket barrier, along the platform, out through the barrier at the other end of the platform to get to the elevator down to it. This is to avoid a big flight of stairs. If you don’t have a day pass the man on the first ticket barrier will give you a ticket to pass through the second barrier. You then proceed as normal. If you hit a problem the ticket barrier staff are always helpful.