Japan Expressway Pass for Campervan

Do you know a website, where I can pre calculate approximately amount of of express way toll I have to pay in Japan?

I had in mind to buy a Japan Expressway Pass, but my rental company told me, it's not longer available (just for regular cars rented by bigger companies).

My rough trip schedule is here: https://goo.gl/maps/XuoUSxBn7yJ2

I have heard about this express way passes here (https://www.japan-guide.com/e/e2354.html) but it seems, rental to foreigners now is not possible anymore?

Would be nice to get some advice...

it seems, rental to foreigners now is not possible anymore?

Rental of what? Campervan? As far as I know, to use Japan Expressway Pass, you need to rent a car from authorized rental car companies, and if they don't provide campervan, you can't rent it. There are rental car companies which provides campervan, but they seems to be not in the list of authorized companies. In any case, rental campervan seems to be very expensive, so you might better take cheaper cars (from the authorized companies) and do camp in the campsites.

There are a lot of smaller companies like JAPANCAMPERS that offer budget campers in Japan.

I have rented such a car, but company told me since change of Japanese laws, this ETC cards are now only available at bigger rental companies. I don't know why.

I'm now just to figure out a way how to pre calculate my opproximately fee rate for the trip

As far as I know, the expressway pass has been restricted to the user of specific rental car companies.

The expressway companies do not provide English page for calculating the toll fare. You can find English explanation of how to use the Japanese calculation page here.

http://www2.kumagaku.ac.jp/teacher/~masden/tolls/

Google maps also gives toll fees.

Yes and No.
Here in Kyushu such a pass is called KEP and is only valid for the Kyushu's Express-ways (not valid for the urban express ways, like the one @ Fukuoka City).

It depends on the camper rental company if they have an agreement with a specific High Way Company.
This rental outlet got the OK:

http://3seven77.net/en/

Hope this helps.

How can see the toll fee in google maps?