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FREE TRAVEL PLANNING TOOL

How much eSIM data do you need?

Don't guess your gigabytes. Tell us how you travel, and get a helpful data estimate for maps, social apps, streaming and everything in between.

Calculate my data
Free & instant No signup Personalised estimate
YOUR TRIP, YOUR NUMBERS

Your eSIM data calculator

Change anything below. Your result updates instantly—no account, no loading screen, no guesswork.

01

Tell us about your trip

How many days will you use mobile data abroad?

days
1 day90 days
How often will you have Wi-Fi?
02

Choose your travel style

Pick a starting point, then fine-tune your apps.

03

Your daily phone habits

About how many minutes will you use each app category per day?

45 min
Routes, transport & places
45 min
Feeds, photos & short videos
50 min
Websites, chats & email
40 min
Audio streamed on your phone
15 min
Films, shows & long videos
10 min
FaceTime, WhatsApp & similar
Allow for updates, sync & notifications
04

Leave yourself some breathing room

Build in a little extra data for unexpected use.

Extra data bufferApplied after your estimated usage
HOW IT WORKS

Better trips start with the right amount of data.

Too little data can leave you scrambling for Wi-Fi. Too much can mean paying for gigabytes you never use. Use your own habits to find a sensible starting point.

1
Set your trip lengthFrom a weekend away to a longer adventure.
2
Adjust how you use your phoneInclude maps, social media, music, video, calls and Wi-Fi.
3
Pick a suitable allowanceCompare the suggested GB with plans for your destination.
TRAVEL DATA GUIDE

How much mobile data do you need when travelling?

The best travel eSIM allowance depends on the length of your trip, which apps you use and whether you can connect to Wi-Fi. Messaging and basic navigation are usually lighter than video streaming and video calls. A mobile data calculator is more useful than a fixed recommendation because your daily routine matters.

What uses the most mobile data?

Video quality makes a major difference. Netflix's published data guidance lists up to about 0.7 GB per hour at medium quality and up to 3 GB per hour at high-definition quality. Social feeds with autoplay video also use more data than text messages.

Phone activityIllustrative data per hour
Maps and navigation12 MB
Browsing and messaging80 MB
Music and podcasts70 MB
Social feeds and reels260 MB
Video calls500 MB
Streaming (standard)700 MB
Streaming (HD)2,500 MB

These rates are planning assumptions, not guaranteed app measurements. The calculator counts 1 GB as 1,000 MB, reduces eligible activity estimates when you expect to use Wi-Fi, optionally includes 80 MB/day for background use, and adds your chosen buffer. Rates can vary significantly by settings, device and content.

How can you make your travel eSIM last longer?

Download music, videos and supported offline maps over Wi-Fi before heading out. Google Maps explains how offline maps work and which directions might not be available offline. Turn off unnecessary app background updates, lower video quality on mobile data, and use hotel Wi-Fi for large downloads when it is safe to do so.

Ready to choose? Browse ZameSIMs destinations and compare the actual data allowance and validity of available plans. You'll also want to check whether your phone is eSIM-compatible and unlocked.

QUESTIONS, ANSWERED

eSIM data calculator FAQs

A few useful things to know before choosing your travel data plan.

How much eSIM data do I need for 7 days?

It depends on how much video, social media and Wi-Fi you use. A week of maps, browsing and occasional social media can need far less than a week of streaming videos each day. Set the calculator to seven days and choose a preset, then adjust the daily sliders to reflect your habits.

Is 1 GB enough for an international trip?

One gigabyte may be enough for a very short trip if you mostly use messages, light navigation and Wi-Fi. It can run out quickly if you scroll video-heavy social feeds, stream shows or make long video calls. This calculator helps you judge whether you need a larger allowance.

Does an eSIM use more data than a physical SIM?

No. An eSIM changes how your mobile subscription is installed, not how many megabytes an app uses. Your actual consumption is driven by apps, content, settings and network conditions.

Does hotel Wi-Fi reduce how much travel eSIM data I need?

Usually, yes. If you regularly use Wi-Fi for social media, streaming and downloads, you can reduce the amount of mobile data you need. The calculator's Wi-Fi setting estimates that reduction while assuming navigation still happens on mobile data.

How accurate is this eSIM data calculator?

It is a planning estimate. The model uses transparent example rates for each category and does not read your phone's real data usage. App content, resolution, software updates and your network can make real use higher or lower. A data buffer helps allow for that uncertainty.

Can I use this calculator for a 3-day, 10-day or 30-day trip?

Yes. Choose a common duration or set any length from 1 to 90 days. The calculator scales your estimated daily mobile data use across the number of travel days and adds the selected extra allowance.

Ready to stay connected abroad?

Find an eSIM plan that matches your destination and travel days.

Explore ZameSIMs plans