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Japan eSIM

eSIM plans for Japan. Install before you fly and switch on when you land.

This page carries 91 eSIM plans for Japan, riding on NTT DOCOMO / KDDI (au) / SoftBank with 3G / 4G / 5G support. Install the profile at home before you fly; the plan starts counting when the phone first registers on a network at the destination.

ぴったりのプランを組み立てる

Pick your days and data and we match the closest real packages, cheapest first.

−5%5% off every plan · code ESIM5 applied for you · new eSIMs only, not top-ups

日数

How much data

Full speed up to the daily quota, then unlimited at a reduced speed

Sort by91 packages

Japan 1GB 7 days

Exits in Hong Kong · NTT docomo / Rakuten Mobile / KDDI/au

1GB · 7 日間

テザリング
5G

Quantity1

~~￥294~~−5%￥279Promo price, 5% off with code ESIM5

詳細

Japan 1GB 7 days

Exits in Japan · NTT docomo

1GB · 7 日間

テザリング
5G

Quantity1

~~￥294~~−5%￥279Promo price, 5% off with code ESIM5

詳細

Japan 500MB 7 days

500MB · 7 日間

テザリング

Quantity1

~~￥294~~−5%￥279Promo price, 5% off with code ESIM5

詳細

Japan +1 countries 1GB 7 days

Works in 2 countries: Japan, South Koreaすべて見る

Japan, South Korea

1GB · 7 日間

テザリング
5G

No top-up

Quantity1

~~￥449~~−5%￥426Promo price, 5% off with code ESIM5

詳細

Japan 1GB 7 days

Exits in Singapore · KDDI/au

1GB · 7 日間

テザリング
5G

Quantity1

~~￥449~~−5%￥426Promo price, 5% off with code ESIM5

詳細

Japan 3GB 15 days

Exits in Hong Kong · NTT docomo / Rakuten Mobile / KDDI/au

3GB · 15 日間

テザリング
5G

Quantity1

~~￥554~~−5%￥526Promo price, 5% off with code ESIM5

詳細

Picked by how you travel

短い旅行に最適

Japan 500MB per day

NTT docomo / Rakuten Mobile / KDDI/au

Exits in Hong Kong · NTT docomo / Rakuten Mobile / KDDI/au · 384 Kbps after the quota

Daily

データ: 500MB per day
有効期間: sold per day, up to 365 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

Daily, no top-up

〜から~~￥139~~￥132

詳細

データを多く使う人に

Japan 50GB 30 days

NTT docomo / Rakuten Mobile / KDDI/au

Exits in Hong Kong · NTT docomo / Rakuten Mobile / KDDI/au

Fixed

データ: 50GB
有効期間: 30 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

〜から~~￥4,844~~￥4,601

詳細

These picks are computed from price per GB, validity and plan features only — never from what we earn.

All Japan plans

どのプランか迷っていますか？

日数と使用量を選ぶと、このページのプランから選びます

日数

使用量の目安

テザリングが必要

最もおすすめ

Japan 2GB per day

KDDI/au

2GB per day, buy exactly the 7 days you need
Supports 5G network

~~￥4,225~~￥4,013

for 7 days

このプランを選ぶ

最安

Japan 10GB 30 days

NTT docomo / Rakuten Mobile / KDDI/au

10GB for 7 days, leaves about 41% headroom
Valid for 30 days, longer than your 7-day trip in case plans shift
Supports 5G network

~~￥1,394~~￥1,325

このプランを選ぶ

余裕のあるデータ量

Japan 20GB 30 days

NTT docomo / Rakuten Mobile / KDDI/au

20GB for 7 days, leaves about 183% headroom
Valid for 30 days, longer than your 7-day trip in case plans shift
Supports 5G network

~~￥2,279~~￥2,165

このプランを選ぶ

最も柔軟

Japan 3GB per day

NTT docomo / Rakuten Mobile / KDDI/au

3GB per day, buy exactly the 7 days you need
Supports 5G network

~~￥5,308~~￥5,042

for 7 days

このプランを選ぶ

Short trips, 1–7 days8 packages

並び替え

Japan 1GB 7 days

NTT docomo / Rakuten Mobile / KDDI/au

Exits in Hong Kong · NTT docomo / Rakuten Mobile / KDDI/au

Fixed

データ: 1GB
有効期間: 7 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

〜から~~￥294~~￥279

詳細

Choose network

Japan 500MB 7 days

NTT docomo / Rakuten Mobile / KDDI/au

Fixed

データ: 500MB
有効期間: 7 days
テザリング: 可
通信方式: 3G / 4G

Validity starts on first connection at the destination

4G only, no 5G

〜から~~￥294~~￥279

詳細

Japan +1 countries 1GB 7 days

2 countries · partner networks

Fixed

Works in 2 countries: Japan, South Koreaすべて見る

Japan, South Korea

データ: 1GB
有効期間: 7 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

No top-up

〜から~~￥449~~￥426

詳細

Japan +2 countries 1GB 7 days

3 countries · partner networks

Fixed

Works in 3 countries: Japan, China, South Koreaすべて見る

Japan, China, South Korea

データ: 1GB
有効期間: 7 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

〜から~~￥758~~￥720

詳細

Japan +19 countries 1GB 7 days

20 countries · partner networks

Fixed

Works in 20 countries: Japan, Australia, China +17すべて見る

Japan, Australia, China, Hong Kong, Singapore, South Korea, Vietnam, Cambodia, India, Indonesia, Israel, Kuwait, Macau, Malaysia, New Zealand, Pakistan, Philippines, Saudi Arabia, Sri Lanka, Thailand

データ: 1GB
有効期間: 7 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

〜から~~￥1,068~~￥1,014

詳細

Japan +11 countries 1GB 7 days

12 countries · partner networks

Fixed

Works in 12 countries: Japan, China, Hong Kong +9すべて見る

Japan, China, Hong Kong, Singapore, South Korea, Taiwan, Vietnam, Cambodia, Indonesia, Macau, Malaysia, Thailand

データ: 1GB
有効期間: 7 days
テザリング: 可
通信方式: 3G / 4G

Validity starts on first connection at the destination

4G only, no 5G

〜から~~￥1,068~~￥1,014

詳細

8–15 days4 packages

並び替え

Japan 3GB 15 days

NTT docomo / Rakuten Mobile / KDDI/au

Exits in Hong Kong · NTT docomo / Rakuten Mobile / KDDI/au

Fixed

データ: 3GB
有効期間: 15 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

〜から~~￥554~~￥526

詳細

Choose network

Japan +2 countries 3GB 15 days

3 countries · partner networks

Fixed

Works in 3 countries: Japan, China, South Koreaすべて見る

Japan, China, South Korea

データ: 3GB
有効期間: 15 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

〜から~~￥1,532~~￥1,455

詳細

Japan +19 countries 3GB 15 days

20 countries · partner networks

Fixed

Works in 20 countries: Japan, Australia, China +17すべて見る

Japan, Australia, China, Hong Kong, Singapore, South Korea, Vietnam, Cambodia, India, Indonesia, Israel, Kuwait, Macau, Malaysia, New Zealand, Pakistan, Philippines, Saudi Arabia, Sri Lanka, Thailand

データ: 3GB
有効期間: 15 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

〜から~~￥2,461~~￥2,337

詳細

Japan +11 countries 3GB 15 days

12 countries · partner networks

Fixed

Works in 12 countries: Japan, China, Hong Kong +9すべて見る

Japan, China, Hong Kong, Singapore, South Korea, Taiwan, Vietnam, Cambodia, Indonesia, Macau, Malaysia, Thailand

データ: 3GB
有効期間: 15 days
テザリング: 可
通信方式: 3G / 4G

Validity starts on first connection at the destination

4G only, no 5G

〜から~~￥2,461~~￥2,337

詳細

16 days and longer35 packages

並び替え

Japan 3GB 30 days

NTT docomo / Rakuten Mobile / KDDI/au

Exits in Hong Kong · NTT docomo / Rakuten Mobile / KDDI/au

Fixed

データ: 3GB
有効期間: 30 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

〜から~~￥648~~￥616

詳細

Choose network

Japan 5GB 30 days

NTT docomo / Rakuten Mobile / KDDI/au

Exits in Hong Kong · NTT docomo / Rakuten Mobile / KDDI/au

Fixed

データ: 5GB
有効期間: 30 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

〜から~~￥788~~￥749

詳細

Choose network

Japan +19 countries 1GB 30 days

20 countries · partner networks

Fixed

Works in 20 countries: Japan, Australia, China +17すべて見る

Japan, Australia, China, Hong Kong, Singapore, South Korea, Vietnam, Cambodia, India, Indonesia, Israel, Kuwait, Macau, Malaysia, New Zealand, Pakistan, Philippines, Saudi Arabia, Sri Lanka, Thailand

データ: 1GB
有効期間: 30 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

〜から~~￥1,068~~￥1,014

詳細

Japan +1 countries 3GB 30 days

2 countries · partner networks

Fixed

Works in 2 countries: Japan, South Koreaすべて見る

Japan, South Korea

データ: 3GB
有効期間: 30 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

No top-up

〜から~~￥1,223~~￥1,161

詳細

Japan 10GB 30 days

NTT docomo / Rakuten Mobile / KDDI/au

Exits in Hong Kong · NTT docomo / Rakuten Mobile / KDDI/au

Fixed

データ: 10GB
有効期間: 30 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

〜から~~￥1,394~~￥1,325

詳細

Choose network

Japan +2 countries 3GB 30 days

3 countries · partner networks

Fixed

Works in 3 countries: Japan, China, South Koreaすべて見る

Japan, China, South Korea

データ: 3GB
有効期間: 30 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

〜から~~￥1,687~~￥1,602

詳細

Daily · unlimited with fair use17 packages

Full speed up to each day's quota, then a reduced speed for the rest of that day. Buy as many days as the trip needs.

並び替え

Japan 500MB per day

NTT docomo / Rakuten Mobile / KDDI/au

Exits in Hong Kong · NTT docomo / Rakuten Mobile / KDDI/au · 384 Kbps after the quota

Daily

データ: 500MB per day
有効期間: sold per day, up to 365 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

Daily, no top-up

〜から~~￥139~~￥132

詳細

Choose network

Japan 1GB per day

KDDI/au

Exits in Singapore · KDDI/au · 512 Kbps after the quota

Daily

データ: 1GB per day
有効期間: sold per day, up to 365 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

Daily, no top-up
One network

〜から~~￥294~~￥279

詳細

Choose network

Japan +2 countries 500MB per day

3 countries · partner networks

Daily

Works in 3 countries: Japan, China, South Koreaすべて見る

Japan, China, South Korea

データ: 500MB per day
有効期間: sold per day, up to 365 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

Daily, no top-up

〜から~~￥449~~￥426

詳細

Japan +1 countries 1GB per day

2 countries · partner networks

Daily

Works in 2 countries: Japan, South Koreaすべて見る

Japan, South Korea

データ: 1GB per day
有効期間: sold per day, up to 365 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

Daily, no top-up

〜から~~￥449~~￥426

詳細

Japan 2GB per day

KDDI/au

Exits in Singapore · KDDI/au · 512 Kbps after the quota

Daily

データ: 2GB per day
有効期間: sold per day, up to 365 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

Daily, no top-up
One network

〜から~~￥604~~￥573

詳細

Choose network

Japan +11 countries 500MB per day

12 countries · partner networks

Daily

Works in 12 countries: Japan, China, Hong Kong +9すべて見る

Japan, China, Hong Kong, Singapore, South Korea, Taiwan, Vietnam, Cambodia, Indonesia, Macau, Malaysia, Thailand

データ: 500MB per day
有効期間: sold per day, up to 365 days
テザリング: 可
通信方式: 3G / 4G

Validity starts on first connection at the destination

4G only, no 5G
Daily, no top-up

〜から~~￥604~~￥573

詳細

Covers several countries49 packages

Packages valid beyond one country; the card lists them.

並び替え

Japan +1 countries 1GB 7 days

2 countries · partner networks

Fixed

Works in 2 countries: Japan, South Koreaすべて見る

Japan, South Korea

データ: 1GB
有効期間: 7 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

No top-up

〜から~~￥449~~￥426

詳細

Japan +2 countries 500MB per day

3 countries · partner networks

Daily

Works in 3 countries: Japan, China, South Koreaすべて見る

Japan, China, South Korea

データ: 500MB per day
有効期間: sold per day, up to 365 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

Daily, no top-up

〜から~~￥449~~￥426

詳細

Japan +1 countries 1GB per day

2 countries · partner networks

Daily

Works in 2 countries: Japan, South Koreaすべて見る

Japan, South Korea

データ: 1GB per day
有効期間: sold per day, up to 365 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

Daily, no top-up

〜から~~￥449~~￥426

詳細

Japan +11 countries 500MB per day

12 countries · partner networks

Daily

Works in 12 countries: Japan, China, Hong Kong +9すべて見る

Japan, China, Hong Kong, Singapore, South Korea, Taiwan, Vietnam, Cambodia, Indonesia, Macau, Malaysia, Thailand

データ: 500MB per day
有効期間: sold per day, up to 365 days
テザリング: 可
通信方式: 3G / 4G

Validity starts on first connection at the destination

4G only, no 5G
Daily, no top-up

〜から~~￥604~~￥573

詳細

Japan +2 countries 1GB 7 days

3 countries · partner networks

Fixed

Works in 3 countries: Japan, China, South Koreaすべて見る

Japan, China, South Korea

データ: 1GB
有効期間: 7 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

〜から~~￥758~~￥720

詳細

Japan +2 countries 1GB per day

3 countries · partner networks

Daily

Works in 3 countries: Japan, China, South Koreaすべて見る

Japan, China, South Korea

データ: 1GB per day
有効期間: sold per day, up to 365 days
テザリング: 可
通信方式: 3G / 4G / 5G

Validity starts on first connection at the destination

Daily, no top-up

〜から~~￥758~~￥720

詳細

Plans listed

ネットワーク

NTT DOCOMO, KDDI (au), SoftBank, Rakuten Mobile

通信方式

3G / 4G / 5G

Local currency

JPY

How much data you actually need

到着後にすること

電波が変わる場所

Cities travellers ask about

Read it city by city: Tokyo, Osaka, Kyoto, Sapporo, Fukuoka, Nagoya, Hiroshima, Nara, Okinawa

Apps to install before you fly

Networks in Japan

Operator	通信方式
NTT DOCOMO	4G / 5G
KDDI (au)	4G / 5G
SoftBank	4G / 5G
Rakuten Mobile	4G / 5G

These are the networks operating in the country. A given plan may reach only some of them — check the network named on the plan itself.

Plan comparison

Plan	データ	有効期間	テザリング	販売元
Japan 500MB per day	500MB per day	1 日間	可	eSIMonline
Japan 500MB per day	500MB per day	1 日間	可	eSIMonline
Japan 500MB per day	500MB per day	1 日間	可	eSIMonline
Japan 1GB per day	1GB per day	1 日間	可	eSIMonline
Japan 1GB per day	1GB per day	1 日間	可	eSIMonline
Japan 1GB per day	1GB per day	1 日間	可	eSIMonline
Japan 1GB per day	1GB per day	1 日間	可	eSIMonline
Japan +2 countries 500MB per day	500MB per day	1 日間	可	eSIMonline
Japan +1 countries 1GB per day	1GB per day	1 日間	可	eSIMonline
Japan 2GB per day	2GB per day	1 日間	可	eSIMonline
Japan 2GB per day	2GB per day	1 日間	可	eSIMonline
Japan +11 countries 500MB per day	500MB per day	1 日間	可	eSIMonline

よくある質問

Does an eSIM work on the Shinkansen?+

Yes, though long tunnels interrupt it, especially on the stretches that cut straight through mountains. If you need to join an online meeting on board, download the files you need beforehand and leave slack in the schedule; service comes back on its own once the train clears the tunnel or stops at a station.

Do I need an unlimited plan for Japan?+

Usually not. A 10–20GB plan covers a typical 7–10 day trip built around maps, chat and photos. Unlimited pays off when you stream or go live every day, or when you tether several devices off one line. Multiply your realistic daily use by the number of nights before you decide.

Should I turn roaming off on my Thai SIM while using the eSIM?+

Yes. Set the eSIM as the data line and switch data roaming off on your Thai SIM so you are not billed twice without noticing. You can still leave the Thai line registered for calls and SMS if you are waiting on bank one-time passwords, because receiving a text does not draw on the eSIM data allowance.

When does a Japan eSIM start counting days?+

Most plans here start when the phone first connects to a network at the destination, so you can install in advance at home and switch it on after landing. Each plan page states its own rule.

Do I have to remove my home SIM?+

No. The eSIM is a second line, so you keep your home number for SMS OTP. Turn off roaming data on the home line and set the eSIM as the data line.

More on Japan

📶 Networks and coverage 🗓 ベストシーズン ✈️ NRT Tokyo ✈️ HND Tokyo ✈️ KIX Osaka ✈️ ITM Osaka ✈️ CTS Sapporo ✈️ FUK Fukuoka ✈️ NGO Nagoya ✈️ OKA Okinawa ✈️ HIJ Hiroshima ✈️ SDJ Sendai

Japan 1GB 7 days

Japan 1GB 7 days

Japan 500MB 7 days

Japan +1 countries 1GB 7 days

Japan 1GB 7 days

Japan 3GB 15 days

Picked by how you travel

Japan 500MB per day

Japan 50GB 30 days

All Japan plans

どのプランか迷っていますか？

Japan 2GB per day

Japan 10GB 30 days

Japan 20GB 30 days

Japan 3GB per day

Short trips, 1–7 days8 packages

Japan 1GB 7 days

Japan 500MB 7 days

Japan +1 countries 1GB 7 days

Japan +2 countries 1GB 7 days

Japan +19 countries 1GB 7 days

Japan +11 countries 1GB 7 days

8–15 days4 packages

Japan 3GB 15 days

Japan +2 countries 3GB 15 days

Japan +19 countries 3GB 15 days

Japan +11 countries 3GB 15 days

16 days and longer35 packages

Japan 3GB 30 days

Japan 5GB 30 days

Japan +19 countries 1GB 30 days

Japan +1 countries 3GB 30 days

Japan 10GB 30 days

Japan +2 countries 3GB 30 days

Daily · unlimited with fair use17 packages

Japan 500MB per day

Japan 1GB per day

Japan +2 countries 500MB per day

Japan +1 countries 1GB per day

Japan 2GB per day

Japan +11 countries 500MB per day

Covers several countries49 packages

Japan +1 countries 1GB 7 days

Japan +2 countries 500MB per day

Japan +1 countries 1GB per day

Japan +11 countries 500MB per day

Japan +2 countries 1GB 7 days

Japan +2 countries 1GB per day

How much data you actually need

到着後にすること

電波が変わる場所

Cities travellers ask about

Apps to install before you fly

Networks in Japan

Plan comparison

よくある質問

More on Japan

関連情報