When choosing an eSIM for your trip to Japan, many people may wonder, "How many days can I use 10GB?" "Is it enough for a week-long trip?"
10GB is one of the most popular data capacities for trips to Japan. In addition to Google Maps and LINE, you can also comfortably use it for posting photos on social media and web searches, making it a common choice for trips lasting about 5 to 7 days.
In this article, we will explain in detail the number of days you can use with 10GB, data usage by app, and recommended usage scenarios.

How many days can I use with 10GB?
| Usage Style | Usage Estimate |
|---|---|
| Primarily Google Maps and LINE | 7 to 10 days |
| Using social media daily | 5 to 7 days |
| Watching YouTube | About 10 hours |
| Tethering | About 1 to 2 days |
If you primarily use Google Maps and LINE, 10GB can sometimes accommodate a week-long trip. On the other hand, if you use a lot of video streaming or tethering, data consumption will increase quickly.
Data Usage by App
| App | Data Usage Estimate |
|---|---|
| Google Maps | About 5 to 10MB/hour |
| LINE | About 1 to 5MB/hour |
| About 100 to 300MB/hour | |
| YouTube (720p) | About 1GB/hour |
| TikTok | About 800MB to 1GB/hour |
Since Google Maps and LINE use little data, you can use 10GB relatively comfortably. On the other hand, if you watch video content for long periods, data usage will significantly increase.

Recommended Usage Scenarios for 10GB
| Travel Style | Recommendation Level |
|---|---|
| 5 to 7 days of travel | ★★★★★ |
| Primarily Google Maps and LINE | ★★★★★ |
| Using social media daily | ★★★★★ |
| Sharing photos and videos | ★★★★☆ |
| Watching videos | ★★★★☆ |
10GB is a recommended capacity for trips to Japan lasting about 5 to 7 days. You can use not only Google Maps and LINE but also social media and photo sharing with peace of mind.
Cases Where 10GB May Not Be Enough
- Watching YouTube or Netflix for long hours every day
- Frequently watching videos on Instagram or TikTok
- Holding online meetings via Zoom or Google Meet
- Using tethering for a laptop for long periods
- Automatically backing up photos and videos to the cloud
If you have a lot of such usage, it is safer to choose a plan with 20GB or more.

Tips for Using 10GB Longer
10GB is a popular capacity for trips lasting about a week, but you can use it even more comfortably by being strategic about your usage.
- Use Wi-Fi at hotels and cafes
- Save Google Maps for offline use
- Watch videos in Wi-Fi environments
- Turn off automatic backup for photos and videos
- Stop background data usage for unnecessary apps
If you primarily use Google Maps and LINE, 10GB can sometimes accommodate a trip lasting 7 to 10 days.

Which should you choose: 10GB, 20GB, or 30GB?
| Capacity | Recommended Usage |
|---|---|
| 10GB | 5 to 7 days of travel, primarily Google Maps, LINE, and social media |
| 20GB | 10 to 14 days of travel, if you watch videos or use social media frequently |
| 30GB | 2 to 3 weeks of travel, business trips, or tethering use |
10GB is sufficient for a typical trip to Japan, but if your travel period is longer or if you watch a lot of videos, 20GB or more is recommended.
Frequently Asked Questions
Is 10GB enough for a week-long trip?
If you primarily use Google Maps and LINE, 10GB is often sufficient.
Is 10GB enough for a 10-day trip?
If your use of social media and videos is low, it may be sufficient. If you want to be more secure, around 20GB is recommended.
How much YouTube can I watch with 10GB?
At 720p quality, you can watch for about 10 hours.
If I use Instagram and TikTok daily, will 10GB be enough?
If you only post photos, it should be fine, but if you watch videos for long periods, 20GB or more is recommended.
Can I use tethering with 10GB?
You can use it for a short time, but if you connect a laptop for long periods, data usage will increase significantly.
What should I do if I run out of data?
There are products available for purchasing additional data. It’s a good idea to check if additional purchases are available before your trip.
Is 10GB popular for trips to Japan?
Yes. For trips lasting about 5 to 7 days, 10GB is a very popular capacity.
Which is recommended, 10GB or 20GB?
For trips lasting about 5 to 7 days, 10GB is sufficient, while for trips longer than 10 days or if you watch a lot of videos, 20GB is recommended.
Conclusion
10GB is one of the most chosen capacities for trips to Japan. Not only can you use Google Maps and LINE, but you can also comfortably use social media and photo sharing, making it suitable for trips lasting about 5 to 7 days.
- Recommended for trips lasting about 5 to 7 days
- Can be used sufficiently if primarily using Google Maps, LINE, and social media
- For video streaming or long trips, 20GB or more is recommended
- Using Wi-Fi can extend usage even further
Choose the optimal data capacity eSIM based on your travel days and usage style.