Asia
✓ Prices checked Sep 30, 2026
Roamic Japan eSIM plans & prices
Roamic's complete Japan lineup — 36 plans, benchmarked against all 8 providers and 177 plans we track for this country.
36Plans
$2.00From
$0.66Best $/GB
#2of 8 on $/GB
The verdict, computed
Is Roamic the right eSIM for Japan?
Roamic's best rate in Japan is $0.66/GB — rank #2 of 8; the country benchmark is $0.55/GB. Entry price is $2.00 against the country floor of $1.99. The full ranking context lives in the all-provider Japan comparison.
Roamic in Japan
All 36 Roamic Japan plans
| Plan | Data | Validity | Price | $/day | $/GB | Link |
|---|---|---|---|---|---|---|
| Japan eSIM 50GB / 30 Days | 50GB | 30 days | $33.00 | $1.10 | $0.66 | View plan |
| Japan eSIM 20GB / 30 Days | 20GB | 30 days | $15.00 | $0.50 | $0.75 | View plan |
| Japan eSIM 10GB / 30 Days | 10GB | 30 days | $9.00 | $0.30 | $0.90 | View plan |
| Japan eSIM 3GB / 14 Days | 3GB | 14 days | $3.00 | $0.21 | $1.00 | View plan |
| Japan eSIM 5GB / 21 Days | 5GB | 21 days | $5.00 | $0.24 | $1.00 | View plan |
| Japan eSIM 1GB / 7 Days | 1GB | 7 days | $2.00 | $0.29 | $2.00 | View plan |
| Japan eSIM Unlimited Data / 1 Day | Unlimited | 1 days | $3.00 | $3.00 | — | View plan |
| Japan eSIM Unlimited Data / 2 Days | Unlimited | 2 days | $6.00 | $3.00 | — | View plan |
| Japan eSIM Unlimited Data / 3 Days | Unlimited | 3 days | $9.00 | $3.00 | — | View plan |
| Japan eSIM Unlimited Data / 4 Days | Unlimited | 4 days | $11.00 | $2.75 | — | View plan |
| Japan eSIM Unlimited Data / 5 Days | Unlimited | 5 days | $14.00 | $2.80 | — | View plan |
| Japan eSIM Unlimited Data / 6 Days | Unlimited | 6 days | $16.00 | $2.67 | — | View plan |
| Japan eSIM Unlimited Data / 7 Days | Unlimited | 7 days | $18.00 | $2.57 | — | View plan |
| Japan eSIM Unlimited Data / 8 Days | Unlimited | 8 days | $19.00 | $2.38 | — | View plan |
| Japan eSIM Unlimited Data / 9 Days | Unlimited | 9 days | $22.00 | $2.44 | — | View plan |
| Japan eSIM Unlimited Data / 10 Days | Unlimited | 10 days | $23.00 | $2.30 | — | View plan |
| Japan eSIM Unlimited Data / 11 Days | Unlimited | 11 days | $25.00 | $2.27 | — | View plan |
| Japan eSIM Unlimited Data / 12 Days | Unlimited | 12 days | $27.00 | $2.25 | — | View plan |
| Japan eSIM Unlimited Data / 13 Days | Unlimited | 13 days | $29.00 | $2.23 | — | View plan |
| Japan eSIM Unlimited Data / 14 Days | Unlimited | 14 days | $30.00 | $2.14 | — | View plan |
| Japan eSIM Unlimited Data / 16 Days | Unlimited | 16 days | $32.00 | $2.00 | — | View plan |
| Japan eSIM Unlimited Data / 15 Days | Unlimited | 15 days | $32.00 | $2.13 | — | View plan |
| Japan eSIM Unlimited Data / 17 Days | Unlimited | 17 days | $34.00 | $2.00 | — | View plan |
| Japan eSIM Unlimited Data / 18 Days | Unlimited | 18 days | $35.00 | $1.94 | — | View plan |
| Japan eSIM Unlimited Data / 19 Days | Unlimited | 19 days | $36.00 | $1.89 | — | View plan |
| Japan eSIM Unlimited Data / 20 Days | Unlimited | 20 days | $37.00 | $1.85 | — | View plan |
| Japan eSIM Unlimited Data / 21 Days | Unlimited | 21 days | $39.00 | $1.86 | — | View plan |
| Japan eSIM Unlimited Data / 23 Days | Unlimited | 23 days | $40.00 | $1.74 | — | View plan |
| Japan eSIM Unlimited Data / 22 Days | Unlimited | 22 days | $40.00 | $1.82 | — | View plan |
| Japan eSIM Unlimited Data / 24 Days | Unlimited | 24 days | $41.00 | $1.71 | — | View plan |
| Japan eSIM Unlimited Data / 26 Days | Unlimited | 26 days | $42.00 | $1.62 | — | View plan |
| Japan eSIM Unlimited Data / 25 Days | Unlimited | 25 days | $42.00 | $1.68 | — | View plan |
| Japan eSIM Unlimited Data / 27 Days | Unlimited | 27 days | $43.00 | $1.59 | — | View plan |
| Japan eSIM Unlimited Data / 28 Days | Unlimited | 28 days | $44.00 | $1.57 | — | View plan |
| Japan eSIM Unlimited Data / 29 Days | Unlimited | 29 days | $45.00 | $1.55 | — | View plan |
| Japan eSIM Unlimited Data / 30 Days | Unlimited | 30 days | $46.00 | $1.53 | — | View plan |
Prices in USD as listed by Roamic, excluding promo codes and taxes. Badges compare against all 177 Japan plans we track — see our methodology.
Fine print decoded
Is Roamic unlimited data in Japan really unlimited
| Plan | Price | $/day | Fair-use policy |
|---|---|---|---|
| Japan eSIM Unlimited Data / 1 Day | $3.00 | $3.00 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 2 Days | $6.00 | $3.00 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 3 Days | $9.00 | $3.00 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 4 Days | $11.00 | $2.75 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 5 Days | $14.00 | $2.80 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 6 Days | $16.00 | $2.67 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 7 Days | $18.00 | $2.57 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 8 Days | $19.00 | $2.38 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 9 Days | $22.00 | $2.44 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 10 Days | $23.00 | $2.30 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 11 Days | $25.00 | $2.27 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 12 Days | $27.00 | $2.25 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 13 Days | $29.00 | $2.23 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 14 Days | $30.00 | $2.14 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 16 Days | $32.00 | $2.00 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 15 Days | $32.00 | $2.13 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 17 Days | $34.00 | $2.00 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 18 Days | $35.00 | $1.94 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 19 Days | $36.00 | $1.89 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 20 Days | $37.00 | $1.85 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 21 Days | $39.00 | $1.86 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 23 Days | $40.00 | $1.74 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 22 Days | $40.00 | $1.82 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 24 Days | $41.00 | $1.71 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 26 Days | $42.00 | $1.62 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 25 Days | $42.00 | $1.68 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 27 Days | $43.00 | $1.59 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 28 Days | $44.00 | $1.57 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 29 Days | $45.00 | $1.55 | 3 GB per day at full speed, then ∞ at 1Mbps |
| Japan eSIM Unlimited Data / 30 Days | $46.00 | $1.53 | 3 GB per day at full speed, then ∞ at 1Mbps |
Honest trade-offs
Where Roamic wins and loses
Strengths
- +Backed by Spain's Byte Travel since 2021
- +170+ countries and regions
- +Unlimited-data options in many destinations
- +Wholesale/API reseller platform behind the consumer brand
Watch out for
- –Younger brand with a thinner review track record
- –Unlimited plans carry fair-use limits
The other side by side
Roamic vs the other providers in Japan
Airalo
from $4.00
The original eSIM marketplace
See Airalo plans →
aloSIM
from $3.50
Budget eSIM app from Canada's AffinityClick
See aloSIM plans →
Holafly
from $11.90
Unlimited data, pay by the day
See Holafly plans →
Roami
from $1.99
App-first travel eSIM with 24/7 activation
See Roami plans →
Saily
from $3.99
The no-logs eSIM from the NordVPN team
See Saily plans →
Ubigi
from $3.50
Global 4G/5G eSIM from Transatel, an NTT company
See Ubigi plans →
Yesim
from $3.97
Swiss-based eSIM with pay-as-you-go data
See Yesim plans →
See the whole Japan picture.
Roamic is 2 of 8 on best $/GB here — the full table with all 177 plans, badges and fair-use notes lives on the Japan eSIM comparison. Prices verified Sep 30, 2026.