Find the best eSIM for Japan

We analyzed 6,182 live offers from 61 providers for Japan. Compare total cost, usable data, validity and network details, not marketing claims.

TOP 1
Saily
Flag of Japan

10 GB

30 days

5G
You pay€13.49
€14.99€1.35/GB-10%
View offer
TOP 2
GoMoWorld
Flag of Japan

14 GB

30 days

5G not stated
You pay€9.89
€10.99€0.71/GB-10%
View offer
TOP 3
Voilà
Flag of Japan

1 GB

7 days

5G not stated
You pay€1.23
€1.30€1.23/GB-5%
View offer
TOP 4
RedteaGO
Flag of Japan

50 GB

180 days

5G not stated
You pay€24.69
€27.43€0.49/GB-10%
View offer
€0.83median price / GB
€0.25lowest total price
61providers tracked
71%5G-ready plans
Valentin

Founder and editor

QUICK ANSWER / TRIP SCENARIOS

Best eSIM for Japan in 2026

Four concrete scenarios for Japan: a city break with maps and chat, one week of maps and social, two weeks of video and hotspot, and a month of laptop work. Open the catalog below to filter further.

City break

Maps & chat

~3 GB5–7 days
RedteaGO
Flag of Japan

3 GB

30 days

5G not stated
You pay€5.70
€6.33€1.90/GB-10%
View offer
1 week

Maps & social

~10 GB7–10 days
Airalo
Flag of Japan

10 GB

7 days

5G
You pay€13.18
€15.50€1.32/GB-15%
View offer
2 weeks

Video & hotspot

15 GB+12–16 days
Saily
Flag of Japan

Unlimited

10 days

5G
You pay€26.24
€29.16Fair use-10%
View offer
1 month

Work & hotspot

20 GB+25–35 days
Holafly
Flag of Japan

Unlimited

30 days

4G / LTE
You pay€65.46
€68.90Fair use-5%
View offer
LIVE CATALOG / FILTERABLE

Compare 6,182 eSIM plans for your trip to Japan

Find the best prepaid eSIM for Japan. Sort by price, data or value and compare top travel providers side by side. 364 plans match the filters below.

Where do you need data?
Sort
Data
Duration
Provider
#Provider / planDataValidityNetworkCoverageTotalPrice / GBActions
1
SparkRoam5 GB / 30 Days
5 GB30 days5G not statedFlag of Japan
€3.10
€0.62
View offer
2
AlpineSIMAlpineSIM Japan - 5GB / 30 Days
5 GB30 days5GFlag of Japan
€3.30€2.97-10%
€0.59
View offer-10%
3
ASIMGOeSIM Japan - 20 Days / Total 5GB
5 GB20 days5GFlag of Japan
€3.34€3.01-10%
€0.60
View offer-10%
4
SuperalinkJapan - Regular
5 GB15 days5GFlag of Japan
€3.41€2.90-15%
€0.58
View offer-15%
5
SuperalinkJapan - Regular
5 GB20 days5GFlag of Japan
€3.44€2.92-15%
€0.58
View offer-15%
6
SuperalinkJapan - Regular
5 GB30 days5GFlag of Japan
€3.47€2.95-15%
€0.59
View offer-15%
7
ASIMGOeSIM Japan (NTT Docomo, Local IP) - 15 Days / Total 5GB
5 GB15 days5GFlag of Japan
€3.64€3.28-10%
€0.66
View offer-10%
8
abesteSIMeSIM Japan (NTT Docomo, Local IP) - 15 Days / Total 5GB
5 GB15 days5GFlag of Japan
€3.64€3.28-10%
€0.66
View offer-10%
9
NomadJapan 5 GB 30 Days
5 GB30 days5G not statedFlag of Japan
€3.67€2.94-20%
€0.59
View offer-20%
10
MicroEsimJapan eSIM 5G SoftBank / KDDI - 15 Days / Total 5GB
5 GB15 days5GFlag of Japan
€3.77
€0.75
View offer
11
abesteSIMeSIM Japan - 15 Days / Total 5GB
5 GB15 days5GFlag of Japan
€3.78€3.40-10%
€0.68
View offer-10%
12
SuperalinkJapan - 500MB/day
500 MB/day14 days5GFlag of Japan
€3.79€3.22-15%
€0.47
View offer-15%
13
eSIMCard5GB eSIM Data for 15 Days in Japan
5 GB15 days5GFlag of Japan
€3.86€3.28-15%
€0.66
View offer-15%
14
ASIMGOeSIM Japan (NTT Docomo, Local IP) - 30 Days / Total 5GB
5 GB30 days5GFlag of Japan
€3.86€3.48-10%
€0.70
View offer-10%
15
abesteSIMeSIM Japan (NTT Docomo, Local IP) - 30 Days / Total 5GB
5 GB30 days5GFlag of Japan
€3.87€3.48-10%
€0.70
View offer-10%
16
MicroEsimJapan eSIM IIJ NTT Docomo - 15 Days / Total 5GB
5 GB15 days5GFlag of Japan
€3.92
€0.78
View offer
17
abesteSIMeSIM Japan - 20 Days / Total 5GB
5 GB20 days5GFlag of Japan
€3.97€3.58-10%
€0.72
View offer-10%
18
SuperalinkJapan - 500MB/day
500 MB/day15 days5GFlag of Japan
€3.99€3.39-15%
€0.46
View offer-15%
19
MicroEsimJapan eSIM 5G SoftBank / KDDI - 30 Days / Total 5GB
5 GB30 days5GFlag of Japan
€4.08
€0.82
View offer
20
ConnectMeGuruJapan 5GB 30Days
5 GB30 days5GFlag of Japan
€4.09€3.68-10%
€0.74
View offer-10%
1
SparkRoam5 GB / 30 Days
Data5 GB
Validity30 days
Network5G not stated
You pay€3.10
€0.62/GB
CoverageFlag of Japan
View offer
2
AlpineSIMAlpineSIM Japan - 5GB / 30 Days
Data5 GB
Validity30 days
Network5G
You pay€2.97
Was €3.30€0.59/GB-10%
CoverageFlag of Japan
View offer
3
ASIMGOeSIM Japan - 20 Days / Total 5GB
Data5 GB
Validity20 days
Network5G
You pay€3.01
Was €3.34€0.60/GB-10%
CoverageFlag of Japan
View offer
4
SuperalinkJapan - Regular
Data5 GB
Validity15 days
Network5G
You pay€2.90
Was €3.41€0.58/GB-15%
CoverageFlag of Japan
View offer
5
SuperalinkJapan - Regular
Data5 GB
Validity20 days
Network5G
You pay€2.92
Was €3.44€0.58/GB-15%
CoverageFlag of Japan
View offer
6
SuperalinkJapan - Regular
Data5 GB
Validity30 days
Network5G
You pay€2.95
Was €3.47€0.59/GB-15%
CoverageFlag of Japan
View offer
7
ASIMGOeSIM Japan (NTT Docomo, Local IP) - 15 Days / Total 5GB
Data5 GB
Validity15 days
Network5G
You pay€3.28
Was €3.64€0.66/GB-10%
CoverageFlag of Japan
View offer
8
abesteSIMeSIM Japan (NTT Docomo, Local IP) - 15 Days / Total 5GB
Data5 GB
Validity15 days
Network5G
You pay€3.28
Was €3.64€0.66/GB-10%
CoverageFlag of Japan
View offer
9
NomadJapan 5 GB 30 Days
Data5 GB
Validity30 days
Network5G not stated
You pay€2.94
Was €3.67€0.59/GB-20%
CoverageFlag of Japan
View offer
10
MicroEsimJapan eSIM 5G SoftBank / KDDI - 15 Days / Total 5GB
Data5 GB
Validity15 days
Network5G
You pay€3.77
€0.75/GB
CoverageFlag of Japan
View offer
11
abesteSIMeSIM Japan - 15 Days / Total 5GB
Data5 GB
Validity15 days
Network5G
You pay€3.40
Was €3.78€0.68/GB-10%
CoverageFlag of Japan
View offer
12
SuperalinkJapan - 500MB/day
Data500 MB/day
Validity14 days
Network5G
You pay€3.22
Was €3.79€0.47/GB-15%
CoverageFlag of Japan
View offer
13
eSIMCard5GB eSIM Data for 15 Days in Japan
Data5 GB
Validity15 days
Network5G
You pay€3.28
Was €3.86€0.66/GB-15%
CoverageFlag of Japan
View offer
14
ASIMGOeSIM Japan (NTT Docomo, Local IP) - 30 Days / Total 5GB
Data5 GB
Validity30 days
Network5G
You pay€3.48
Was €3.86€0.70/GB-10%
CoverageFlag of Japan
View offer
15
abesteSIMeSIM Japan (NTT Docomo, Local IP) - 30 Days / Total 5GB
Data5 GB
Validity30 days
Network5G
You pay€3.48
Was €3.87€0.70/GB-10%
CoverageFlag of Japan
View offer
16
MicroEsimJapan eSIM IIJ NTT Docomo - 15 Days / Total 5GB
Data5 GB
Validity15 days
Network5G
You pay€3.92
€0.78/GB
CoverageFlag of Japan
View offer
17
abesteSIMeSIM Japan - 20 Days / Total 5GB
Data5 GB
Validity20 days
Network5G
You pay€3.58
Was €3.97€0.72/GB-10%
CoverageFlag of Japan
View offer
18
SuperalinkJapan - 500MB/day
Data500 MB/day
Validity15 days
Network5G
You pay€3.39
Was €3.99€0.46/GB-15%
CoverageFlag of Japan
View offer
19
MicroEsimJapan eSIM 5G SoftBank / KDDI - 30 Days / Total 5GB
Data5 GB
Validity30 days
Network5G
You pay€4.08
€0.82/GB
CoverageFlag of Japan
View offer
20
ConnectMeGuruJapan 5GB 30Days
Data5 GB
Validity30 days
Network5G
You pay€3.68
Was €4.09€0.74/GB-10%
CoverageFlag of Japan
View offer

Offer links may be affiliate links. We may earn a commission at no extra cost to you; commissions never change rankings. Disclosure

DATA SIGNALS / FULL VALUE

What one gigabyte really costs in Japan

Unlimited plans are kept out of €/GB math so the benchmark for Japan stays comparable.

Best value rate€0.03

Lowest effective €/GB among limited-data plans right now.

Typical market band€0.63 to €1.27

Median sits at €0.83/GB. Half of eligible plans land in this range.

Catalog quality signals28.9 GB avg

71% 5G-ready · 67% hotspot · 23d avg validity

DESTINATION GUIDE

What actually matters for an eSIM in Japan

Practical notes for Japan — networks, usage and the mistakes that waste the first afternoon.

Japan’s three national networks — NTT Docomo, KDDI/au and SoftBank — cover Tokyo, Osaka, Kyoto and the shinkansen corridors densely. Travel eSIMs almost always roam on one of these; the label on the plan card matters more than the eSIM brand. On current catalog labels, travel eSIMs for Japan most often cite KDDI / au, NTT Docomo, SoftBank.

Google Maps, IC card top-ups and translation apps are light. The data spike comes from Instagram Reels, Google Photos backup and hotspot for a laptop in cafés with captive Wi-Fi.

Install before you fly: airport Wi-Fi at Haneda and Narita is usable, but a QR scan in a jet-lag queue is a poor first hour. Keep your home number on for 2FA banks that still SMS.

  • Pocket Wi-Fi counters at the airport are slower to collect than an eSIM already installed.
  • Rural stretches in Hokkaido or along the Sea of Japan can drop to 4G even on a 5G plan.
  • Turn off iCloud Photos backup on cellular unless you bought a heavy or unlimited pack.
BEFORE YOU BUY

Checklist before you buy an eSIM for Japan

Five minutes on this list beats a dead line at the arrivals hall.

  1. 01

    Confirm the host is Docomo, au or SoftBank — not a vague “Japan partners” line.

  2. 02

    If you ride the shinkansen with hotspot, pick at least 10 GB for a week.

  3. 03

    Confirm the phone is carrier-unlocked and eSIM-capable before you pay for Japan.

  4. 04

    Match validity to the real trip length, including the arrival and departure days.

  5. 05

    Size data for Maps, messages, photos and hotspot — not the cheapest sticker.

  6. 06

    Read the host network on the plan, not only the eSIM brand.

  7. 07

    Check whether hotspot is allowed if you will work from a laptop.

TOOLS

Check your phone and data need for Japan

Two checks before checkout: will the eSIM install, and how many gigabytes this trip actually needs.

eSIM compatibility check

Check iPhone, Pixel, Samsung and other flagships before you buy.

Open the checker

eSIM data calculator

Estimate gigabytes from trip length and daily habits, then pick a matching plan.

Open the simulator
HOST NETWORKS

Which eSIM providers use which networks in Japan

Travel eSIMs for Japan connect through local host operators, not their own towers. Below is the current 2026 catalog mapping: provider, host operator(s), and the radio labels those offers advertise. The host networks that appear most often are KDDI / au, NTT Docomo, SoftBank. Providers with the clearest operator labels right now include iRoamly, Superalink, abesteSIM.

Each row groups one provider’s Japan plans by the host operator names found in the catalog. Counts show how often that pairing appears, not a coverage quality score.

ProviderAvg €/GBHost operatorsNetwork5G
iRoamly306 plans sampled€4.90
  • KDDI / au176 offers
  • SoftBank152 offers
  • NTT Docomo130 offers
4G / LTE5G
100%
Superalink274 plans sampled€0.69
  • SoftBank263 offers
  • KDDI / au11 offers
3G4G / LTE5G
100%
abesteSIM165 plans sampled€0.65
  • KDDI / au108 offers
  • NTT Docomo56 offers
  • SoftBank1 offers
4G / LTE5G3G
99%
ASIMGO160 plans sampled€0.66
  • KDDI / au109 offers
  • NTT Docomo51 offers
4G / LTE5G3G
70%
MicroEsim136 plans sampled€0.84
  • KDDI / au93 offers
  • NTT Docomo43 offers
4G / LTE5G3G
100%
CocoRoam108 plans sampled€0.97
  • NTT Docomo108 offers
4G / LTE5G
100%
PlanJapon26 plans sampled€0.97
  • NTT Docomo26 offers
  • KDDI / au26 offers
  • SoftBank26 offers
5G4G / LTE
100%
eSIMCard61 plans sampled€1.26
  • NTT Docomo43 offers
  • KDDI / au18 offers
2G3G4G / LTE5G
100%
BambooSIM66 plans sampled€1.37
  • KDDI / au58 offers
  • SoftBank2 offers
5G4G / LTE
100%
JamboSim53 plans sampled€4.46
  • KDDI / au40 offers
  • SoftBank13 offers
5G4G / LTE
100%
iRoamly306 plans sampled
Avg €/GB€4.90
5G plans100%
Host operators
  • KDDI / au176 offers
  • SoftBank152 offers
  • NTT Docomo130 offers
Network labels
4G / LTE5G
abesteSIM165 plans sampled
Avg €/GB€0.65
5G plans99%
Host operators
  • KDDI / au108 offers
  • NTT Docomo56 offers
  • SoftBank1 offers
Network labels
4G / LTE5G3G
ASIMGO160 plans sampled
Avg €/GB€0.66
5G plans70%
Host operators
  • KDDI / au109 offers
  • NTT Docomo51 offers
Network labels
4G / LTE5G3G
MicroEsim136 plans sampled
Avg €/GB€0.84
5G plans100%
Host operators
  • KDDI / au93 offers
  • NTT Docomo43 offers
Network labels
4G / LTE5G3G
PlanJapon26 plans sampled
Avg €/GB€0.97
5G plans100%
Host operators
  • NTT Docomo26 offers
  • KDDI / au26 offers
  • SoftBank26 offers
Network labels
5G4G / LTE
eSIMCard61 plans sampled
Avg €/GB€1.26
5G plans100%
Host operators
  • NTT Docomo43 offers
  • KDDI / au18 offers
Network labels
2G3G4G / LTE5G
BambooSIM66 plans sampled
Avg €/GB€1.37
5G plans100%
Host operators
  • KDDI / au58 offers
  • SoftBank2 offers
Network labels
5G4G / LTE
JamboSim53 plans sampled
Avg €/GB€4.46
5G plans100%
Host operators
  • KDDI / au40 offers
  • SoftBank13 offers
Network labels
5G4G / LTE

Most common host operators in Japan

  • KDDI / au831 labeled plans
  • NTT Docomo688 labeled plans
  • SoftBank528 labeled plans
Compare plans by networkRead provider reviews
PROVIDER COMPARISON

eSIM provider comparison for Japan

Every provider in the Japan catalog, ranked by average €/GB. Compare entry price, 5G share, hotspot and live promo codes, then open a review for setup notes.

ProviderFromAvg / GB5GHotspotPromo
All provider reviews Active promo codes Back to plan comparison
SETUP GUIDE

How to install an eSIM for Japan

Most travelers can install before departure over Wi-Fi, then activate on arrival. Keep your primary SIM available until the travel eSIM is online.

  1. 01Check device compatibility

    Confirm your phone is carrier-unlocked and supports eSIM. Recent iPhone, Google Pixel and many Samsung flagships do.

  2. 02Buy and receive the QR or install link

    Choose a plan for Japan, complete checkout with the provider, and save the QR code or activation email offline.

  3. 03Install over stable Wi-Fi

    Scan the QR in mobile settings or follow the provider install link before you fly when possible.

  4. 04Enable data roaming for the eSIM line

    On arrival, select the travel eSIM as your data line, enable data roaming for that line, and keep the primary number for calls or 2FA if needed.

Installation steps can vary by provider app. If setup fails, open the provider guide linked from the offer page before contacting support.

FAQ / TRAVELERS ASK

Japan eSIM FAQ

Straight answers built from the live catalog and practical setup guidance for Japan.

How much does an eSIM for Japan cost in 2026?

In the current 2026 snapshot for Japan, the lowest total price tracked is €0.25 across 6,182 plans from 61 providers. The median value on limited-data plans is €0.83 per GB.

What is the best eSIM for Japan right now?

There is no single winner for every trip in Japan. Current catalog leaders by plan count include iRoamly, Superalink, abesteSIM. Start with the top ranked plans on this page, then filter by data size, validity and 5G or hotspot needs.

Which local networks do travel eSIMs use in Japan?

Plans sampled for Japan most often mention host operators such as KDDI / au, NTT Docomo, SoftBank. The exact partner network still depends on the provider and plan you buy, so confirm the operator label before checkout.

Do I need unlimited data in Japan?

Unlimited can help for heavy streaming or long hotspot sessions. This market currently lists 765 unlimited-style plans—use the Best unlimited pick above, then confirm fair-use and speed rules. We still keep unlimited out of the median €/GB benchmark.

Are travel eSIMs in Japan 5G ready?

71% of tracked plans for Japan advertise 5G support. Real-world access still depends on your handset, local partner network and the provider policy.

Can I use hotspot with an eSIM in Japan?

67% of listed plans mention hotspot or tethering. If sharing data with a laptop is critical, filter for hotspot before checkout and re-check the provider terms.

How long do eSIM plans for Japan usually last?

Average validity across tracked plans for Japan is 23 days. Short 7-day packs suit weekends; longer 15 to 30 day plans are better for extended stays.

When should I install my eSIM for Japan?

Install over Wi-Fi before you travel to Japan when the provider allows it, then enable the line on arrival. Keep your primary SIM active until the travel eSIM shows a stable data connection.

Why choose an eSIM for a trip to Japan?

A travel eSIM avoids expensive home-carrier roaming and the airport SIM counter. Install it before you fly, keep your primary number for calls and 2FA, and connect as soon as you land. The 2026 catalog currently lists 6,182 plans from 61 providers for Japan.

Why use our eSIM comparator for Japan?

eSIM Giga ranks the 6,182 Japan offers by total price and effective €/GB, not paid placement. Filter by data, validity, 5G and hotspot, then check out with the provider at the listed price. Unlimited plans stay out of the median so the comparison stays honest.

How can I get a free eSIM in Japan?

A truly free, usable eSIM in Japan is rare: trial packs are usually tiny or time-limited. The realistic options are a verified promo code or the cheapest plan in this comparison, currently from €0.25. Treat “free” offers with throttled speeds, token data or a hidden subscription with caution.

Can I get a local phone number with an eSIM in Japan?

Most travel eSIMs for Japan are data-only and do not include a local number. Keep your primary line on for calls, SMS and 2FA. A few providers sell a virtual number or voice minutes—check the plan details before checkout if you need one.

How do I buy an eSIM for Japan?

Compare plans on this page, pick the data and validity that match your trip, then complete checkout on the provider site. Save the QR code, install over Wi-Fi before you travel, and activate on arrival. The buying guide above covers plan choice; the setup guide covers the technical steps.

METHODOLOGY / REPRODUCIBLE

How eSIM Giga ranks this market

  1. Collect. We normalize live plan prices, data, validity and feature fields.
  2. Compare. Limited-data plans are measured by total cost and effective €/GB.
  3. Separate. Unlimited plans never distort the median price per GB benchmark.
  4. Refresh. The page is regenerated daily from the latest catalog snapshot.

Commercial relationships can affect outbound links, never the formula or the underlying price fields. Read the full editorial methodology, explore more markets in the destinations directory or open provider reviews.

AUTHOR / EDITOR

Who reviews these plans

I built eSIM Giga so you can pick a travel plan from live prices and usable gigabytes, not from an “unlimited” slogan.

Valentin

Founder and editor of eSIM Giga

I review travel eSIM plans from the catalog I maintain: total price, price per GB, validity, hotspot, 5G and host networks. Affiliate links can fund the site; they never move a ranking. If a figure looks wrong, write to me and I will check it.

I last reviewed this page on .

How I rank plans Write to me
  • 01
    Independent

    Independent editor, not a mobile carrier

  • 02
    Catalog

    Rankings from the live catalog, not brochures

  • 03
    Corrections

    Corrections sent to me are checked before they go live