Plan your trip data
Travel Data Calculator
Estimate how much data your trip needs and pick the right eSIM plan in under a minute.
How will you use your phone?
Streaming
1 hr ≈ 1 GB
Social Media
1 hr ≈ 500 MB
Maps / Navigation
1 hr ≈ 50 MB
Email / Web
1 hr ≈ 20 MB
Video Calls
1 hr ≈ 500 MB
Music Streaming
1 hr ≈ 50 MB
Total estimated data
0 GB
Based on average usage
Worried about running out of data while traveling?
Our travel data calculator helps you estimate your data consumption based on what you actually do on your phone — streaming, maps, social media, video calls, music, and email. Drag the sliders below to match your trip, and we'll show you the total data you need so you can pick the right eSIM plan and stay connected wherever you go.
How to use this calculator
Set your daily usage
Drag each slider to the number of hours per day you expect to spend on each activity — streaming, navigation, social, email, video calls, or music.
Read your total
The card on the right totals your estimated daily consumption in GB. Numbers update live as you move the sliders.
Pick the right plan
Match the total against our country plans and choose a package that covers your trip with a small buffer for the unexpected.
Activate in minutes
Buy, scan the QR code, and your eSIM is ready to use within a few minutes — no physical SIM swap, no airport kiosk, no surprise roaming bill.
Tips to save data while traveling
Download offline maps
Google Maps and Apple Maps let you save entire regions for offline use. One download before your trip replaces hours of mobile navigation.
Use Wi-Fi when you can
Hotels, cafés, and airports still offer free Wi-Fi. Connect for big downloads, app updates, and cloud backups to cut your mobile data usage.
Lower streaming quality
Video is the biggest data hog. Standard definition uses roughly three times less data than HD for the same watching time.
Disable background sync
Cloud backups, photo sync, and app updates can burn through hundreds of MB without you noticing. Restrict background data when you roam.
Frequently asked questions
How accurate is the data calculator?
The calculator uses average consumption rates per activity and multiplies by the hours you set. Real usage varies by app, video quality, and signal — we recommend adding a 20–30% safety buffer to the total.
Should I round up or down when picking a plan?
Always round up. Running out of data mid-trip is harder to recover from than having a few GB left over, and most eSIM plans let you top up if you underestimate.
How much data does video calling use?
A one-hour WhatsApp, Zoom, or FaceTime call typically uses 300–500 MB depending on video quality. We default to 500 MB per hour to cover HD video calls.
What happens if I use more data than my plan covers?
TailSim eSIMs slow down or stop data once the plan is exhausted — you will not be surprise-charged. Top-up plans are available from your account if you need more data mid-trip.
Ready to stay connected on your trip?
Pick a destination, choose a data plan, and activate your eSIM in minutes.
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