Airalo
1GB · 7 days
32k$6.50 AUD
The best eSIM for Japan
Instant data, no physical SIM required.
Instant data, no physical SIM required. Japan is one of the best-value eSIM destinations - 10GB for 15 days is typically under AUD $15, versus $5-$10 per day for Australian roaming.
10 esim options for Japan, compared
Saily Cheapest 10GB
10GB · 15 days
6k$11.50 AUD
Airalo Recommended
10GB · 15 days
32k$13 AUD
Airalo
20GB · 30 days
32k$22 AUD
Klook
SIM, eSIM or pocket wifi
40kVaries by plan
Yesim
Country and regional plans
4kVaries by plan
Ubigi Best for long trips
5GB · 30 days
8k$12 AUD
Compare only
Nomad
10GB · 15 days
12k$15 AUD
Compare only
Holafly Unlimited data
Unlimited · 15 days
28k$22 AUD
Compare only
Nomad
20GB · 30 days
12k$26 AUD
Compare only
Prices are indicative, shown in AUD and refreshed from provider APIs where available. Always confirm the final price on the provider's site - it is the price that applies. We may earn a commission if you buy through our links, which never changes what you pay. Partners are listed before providers who pay us nothing, as our terms set out; sorting by price ignores all of that and orders on the number alone. How we make money.
Compared side by side
| Provider | Data | Validity | Price (AUD) | Per GB |
|---|---|---|---|---|
| Airalo Partner | 1GB | 7 days | $6.50 | $6.50 |
| Saily Partner | 10GB | 15 days | $11.50 | $1.15 |
| Airalo Partner | 10GB | 15 days | $13 | $1.30 |
| Airalo Partner | 20GB | 30 days | $22 | $1.10 |
| Klook Partner | Several plans | Choose on booking | Varies by plan | - |
| Yesim Partner | Several plans | Choose on booking | Varies by plan | - |
| Ubigi | 5GB | 30 days | $12 | $2.40 |
| Nomad | 10GB | 15 days | $15 | $1.50 |
| Holafly | Unlimited | 15 days | $22 | - |
| Nomad | 20GB | 30 days | $26 | $1.30 |
Getting online in Japan
What is mobile coverage like in Japan?
Outstanding, including in subways, on the shinkansen and in rural areas.
Is an eSIM cheaper than roaming in Japan?
Japan is one of the best-value eSIM destinations - 10GB for 15 days is typically under AUD $15, versus $5-$10 per day for Australian roaming.
Whether your handset takes an eSIM, and what happens to your Australian number, are the same answers everywhere - covered once on the eSIM hub.
More Japan essentials
Japan visa and entry rules
Passport, visa, arrival cards and customs rules for Australian passport holders.
Flights to Japan
Search fares from Australia, then sort the rest of the trip.
Japan travel insurance
Medical, cancellation and luggage cover for Australian travellers.
Japan money and cards
Cards, cash and FX fees for Australian travellers.
Japan airport transfers
Trains, buses, private transfers and taxis compared.
Driving in Japan
International Driving Permit rules and car hire for Australians.
Japan travel essentials
Adapters, plugs, tap water, tipping and health basics.
Things to do in Japan
Attractions, tours and passes worth booking ahead.
Further reading: eSIM vs roaming vs local SIM: what Australians should actually buy
How these comparisons are made
Every plan listed can be bought with an Australian account and is priced in AUD, with a per-GB column so a 1GB and a 20GB plan can be compared honestly. Jamie has personally bought and used eSIMs from the providers in these tables on real trips - being usable by an actual Australian traveller, not just cheap on paper, is the bar for inclusion. Prices are indicative and re-checked against provider pricing; the provider's checkout is always authoritative. Read the full editorial policy.
Japan connectivity FAQs
What power adapter do I need for Japan?
A Type A adapter. Japan runs on 100V - the lowest in the world - so phone and laptop chargers are fine but Australian hair dryers and styling tools often underperform or won't work.
Is an eSIM better than roaming in Japan?
Usually, yes. Australian roaming day passes run about $5-$10 a day, while a 15-day Japan eSIM with 10GB is typically under $15 total. eSIMs are data-only, so keep your Australian SIM active if you need calls or SMS one-time codes.
Planning Japan?
We will send you the Japan guide as it grows - what to book before you go, which eSIM and travel card are worth it there, and what things actually cost in Australian dollars.