Guide · 2026
How much does the Shinkansen cost for a family?
There is no "family price" on the Shinkansen. There is an adult fare, a set of rules about children, and a few charges that quietly change the total. Once you know the rules, the maths is simple — and we built a free calculator that does it for you.
The short answer
Take the one-way adult fare for your route. Children aged 6–11 cost about half of it. Children under 6 are free, up to two per fare-paying adult, as long as they sit on a lap or in a non-reserved seat. Multiply by two for a return trip. That is genuinely most of it.
What we deliberately do not do is publish a price table. Shinkansen fares change by route, season and seat type, and a table that is wrong is worse than no table. So the calculator asks you for the adult fare — which you look up on an official fare search — and applies the rules to it.
The rules, in the order they bite
1. Children 6–11 pay about half
The half is not applied to the total. JR halves the basic fare and the limited-express charge separately, and rounds each down to the nearest ¥10. In practice this means your real ticket can differ from a naive "half of the total" by a few tens of yen. Green-car and sleeper tickets are full price for children.
2. Under-6s are free — but only two per adult, and only without their own seat
This is the rule that surprises people. Two adults travelling with three under-6s do not get three free children: the third pays the child fare. And if you want an under-6 to have their own reserved seat — which, on a three-hour leg with a toddler, you may well want — that child pays the child fare too. The free ride is for lap-sitting or non-reserved seats.
3. Reserved vs non-reserved changes the shape of the trip
Non-reserved is cheaper and keeps the under-6s free, but with a family it means queuing on the platform and hoping four seats together exist. Reserved costs more and removes that gamble. Neither is the "right" answer; it depends on whether your budget or your patience is the scarcer resource that day.
4. Big suitcases need a free reservation
On the Tokaido, Sanyo and Kyushu Shinkansen, baggage of 160–250 cm total (length + width + height) requires a free advance reservation for an oversized-baggage seat. It costs nothing but it is easy to miss, and families with a large hold suitcase are exactly the people it applies to. Book it when you book the seats.
Work out your own number
Enter your adult fare and your family's ages here and the calculator gives you the total, plus a breakdown of who is paying what:
It never invents a price — you supply the adult fare, it applies the rules. Always confirm the exact amount on an official channel before you buy.
A note on rail passes
People often ask whether a rail pass is worth it for a family. We are not going to answer that with a number here, because it depends entirely on how many long legs you actually take, and most families overestimate that. Work out your real itinerary's fares first — the calculator makes that quick — and only then compare. A pass bought for a trip with two long legs usually loses.
This guide applies published JR fare rules and does not quote prices we have not verified. Rules and fares change: confirm on official sites before you travel. Some links on this site are affiliate links.