Transport

Shinkansen oversized baggage rules: when you must reserve space

Measure your suitcase, reserve the correct seat when required and avoid the ¥1,000 unreserved baggage fee.

Page updated: October 13, 2026
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Quick answer

Add the outside length, width and height of each bag. On the Tokaido, Sanyo, Kyushu and Nishi Kyushu Shinkansen, a bag over 160 cm and up to 250 cm normally requires a seat with an oversized baggage area. Check the all-unreserved-train exception below.

Measure the outside height, width and depth including wheels and handles; distinguish up to 160 cm, over 160 to 250 cm and over 250 cm. — Add the three outside dimensions of each bag. The reservation rule below covers the specified Shinkansen services; check the exception for all-unreserved trains.

Measure all three sides

Add the bag’s length, width and height, including wheels, handles and other protruding parts.

Reserve the correct seat before boarding

For oversized baggage on the Tokaido, Sanyo, Kyushu and Nishi Kyushu Shinkansen, select a seat with an oversized baggage area. The baggage-space reservation itself has no additional charge.

Use only the space assigned to your reservation

After boarding, place the bag in the rear-seat baggage area connected to your reservation. If suitable space is sold out, choose another eligible train or send the luggage ahead.

Useful Japanese phrase

I have oversized baggage. Which seat should I reserve?

特大荷物があります。どの席を予約すればいいですか？

Tokudai nimotsu ga arimasu. Dono seki o yoyaku sureba ii desu ka?

Measure the outside of your suitcase before booking

Add length, width and height, including wheels, handles and protruding parts. A normal airline label such as “large” is not enough to decide the JR rule.

The rule in one screen

Which size is your bag?

Up to 160 cmNo oversized-baggage reservation required

Use the overhead rack, space by your feet when suitable, or an available deck storage area that permits your bag.

Over 160 cm, up to 250 cmReserve the correct seat before boarding

Select a seat with an oversized baggage area. The baggage-space option has no extra charge; the normal reserved-seat fare still applies.

More than 250 cmNot permitted as ordinary carry-on baggage

Arrange an appropriate delivery service instead. Confirm the service’s size, weight, cutoff and destination limits before paying.

Where advance reservation applies

Tokaido, Sanyo, Kyushu and Nishi Kyushu Shinkansen

The reservation rule applies on these four Shinkansen routes. It does not apply in the same way to conventional JR lines or other Shinkansen routes; check the operator for your exact train. JR Kyushu lists an exception for trains with all cars unreserved: no oversized-baggage-space reservation is needed. Ask staff where to store your bag on such a train.

Ordinary luggage is limited to two pieces per passenger, each up to 30 kg, with three dimensions totalling no more than 250 cm and a maximum length of 2 m. Small personal items such as handbags are not counted in those two pieces.

Reserved space behind designated last-row seats is different from a deck luggage rack available without reservation on some Tokaido and Sanyo trains. — Illustration: the reserved rear-seat area and the deck storage area are different places. Layouts vary. A deck rack does not replace a required oversized-baggage reservation.

What changed on July 1, 2025?

Some Tokaido and Sanyo Shinkansen deck compartments are now available without reservation on a trial basis. JR Central directs ordinary suitcases of 160 cm or less to these storage areas when suitable. Availability and fittings vary by train. This does not replace the reserved rear-seat area required for bags over 160 cm. Follow the storage instructions on your train.

Before you board

Reserve and store it in four steps

1Measure every large bagAdd the three outside dimensions. Measure each bag separately rather than adding several bags together.
2Choose an eligible reserved seatOnline or at a JR reserved-seat ticket machine or counter, select a “seat with an oversized baggage area.” Tell staff you have oversized baggage. JR KYUSHU RAIL PASS Online Booking does not offer these seats; pass holders should ask at a station ticket counter.
3Match the space to the suitcaseUse the space behind the designated last-row seats linked to your reservation. It is shared with the other passengers who booked those seats. A deck storage area is a different facility and is not a substitute for this reservation.
4Use only the space assigned to youDo not place a large suitcase behind another passenger’s seat. Keep aisles and doors clear and follow train-crew instructions.

Boarding with oversized baggage but no reservation costs ¥1,000

The fee includes tax, and the crew will direct where the bag must be stored. Paying the fee is not a substitute for reserving in advance; if eligible space is sold out, choose another train or send the bag.

Three easily missed details

Strollers, instruments and sports equipment

These items are exempt from the oversized-baggage reservation rule itself. To use a reserved rear-seat oversized baggage area, however, reserve the designated seat. Other carry-on restrictions still apply; check unusual items with the operator.

If you miss the reserved train

Do not simply take the bag into a non-reserved car on the next train. Ask staff and obtain another eligible reserved seat for the oversized baggage.

If the bag is hard to lift but not oversized

If it remains within JR's ordinary carry-on size and weight limits, the oversized-baggage reservation is not required. Do not put a heavy or unstable bag on an overhead rack. On trains offering it, use an appropriate deck storage area for baggage of 160 cm or less, or ask staff before boarding.

Suitcases prepared for luggage delivery and storage in Japan

Prefer hands-free travel?

Send or store the suitcase instead

Compare hotel and airport delivery, staffed storage and coin lockers. Keep your passport, medicine, tickets, valuables and anything needed that day with you.

Open the luggage delivery and storage guide →

Show this at the ticket counter 特大荷物があります。特大荷物スペース付きの席を予約したいです。 Tokudai nimotsu ga arimasu. Tokudai nimotsu supēsu-tsuki no seki o yoyaku shitai desu.

I have oversized baggage. I would like to reserve a seat with oversized baggage space.

Checked against current JR Central, JR West and JR Kyushu official guidance on October 13, 2026. Train formations, eligible storage locations and booking screens can vary, so confirm the live operator guidance for your exact train.

Useful links

Measure your bag and use the correct Shinkansen space

Official resources come first. Links open in a new tab.

Official JR rules Measure and reserve oversized baggage space JR West explains the 160 cm and 250 cm limits, eligible storage areas, the ¥1,000 fee and the July 2025 deck-storage trial. Check the current JR rules → Official Tokaido guide Tokaido Shinkansen luggage information JR Central explains eligible trains, online and station reservations, storage locations, carry-on limits and frequently asked questions. Open JR Central guidance → Official Kyushu guide Kyushu and Nishi Kyushu Shinkansen rules JR Kyushu lists eligible cars, oversized baggage seats and current conditions for Kyushu and Nishi Kyushu services. Open JR Kyushu guidance → Alternative to carrying it Send or store your suitcase instead Compare delivery between airports and hotels, staffed storage and coin lockers when suitable Shinkansen baggage space is unavailable. Open the luggage guide →