Japan · 3 GB
3 GB eSIM for Japan, ranked
4 providers sell a 3 GB eSIM for Japan. Here they are from cheapest to most expensive, with what each one actually costs per gigabyte.
Prices checked on August 22, 2026 · All prices shown in US dollars.
- Go to Computatus eSIM
Computatus eSIM
No. 1 — Best value
$3.04$1.01 per GB
- Go to Nomad
Nomad
No. 2 — Runner-up
$7.00$2.33 per GB
- Go to Saily
Saily
No. 3 — Third
$7.99$2.66 per GB
- Go to Airalo
Airalo
No. 4 — Fourth
$8.00$2.67 per GB
The verdict
For a 3 GB trip to Japan, Computatus eSIM wins on price at $3.04. Choosing it over Airalo keeps $4.96 in your pocket.
How we rank
One criterion: the price you pay for 3 GB in Japan. No sponsored placements, no weighting — the cheapest plan is number one.
Who makes the shortlist
We only rank providers travellers already depend on: sold directly, priced publicly, running on the local networks in Japan. That keeps the shortlist at 4. The point of this page is not to list everyone — it is to list the ones you can buy with confidence.