One week

The Best Japan eSIM for a 7 Day Trip

The classic first Japan week has a four-plan shelf. Every price below is the live catalog, checked October 22, 2026.

The 7 day shelf, priced

3GB for a week at $7.76: the light phone. 5GB at $9.33: the disciplined tourist. 10GB at $12.44: the pick for most first trips. Unlimited at $33.68: no counting, one flat 10 Mbps cap, stated before you pay.

Which one is actually yours

Check last month's usage in your phone's settings. Under 1GB a week at home: 3GB travels fine. One to two: 5GB. More, or daily video posting: 10GB and stop thinking about it. Video calls home every evening: unlimited.

The week is rarely the constraint

5GB also ships in 15 and 30 day validities at nearly the same price. Any chance the trip stretches, buy the longer validity; the spare days cost almost nothing.

Three habits that make 10GB plenty

Install at home before the flight. Photo backup on Wi-Fi only. Let the hotel carry the evening scroll.

Straight answers

How much does a 7 day Japan eSIM cost?

On our shelf today: 3GB at $7.76, 5GB at $9.33, 10GB at $12.44, unlimited at $33.68. Prices are the live catalog, checked October 22, 2026.

Is unlimited worth it for one week in Japan?

If you video call or stream daily, yes. Otherwise 10GB covers a normal week with margin, and the unlimited plan's flat 10 Mbps cap is the trade you would be paying for.

When do the 7 days start counting?

Not at purchase. Each plan states its rule at checkout: at install or at first connection in Japan.