How much data do you need for your trip? A guide by traveler type

In short: to know how much data you need for travel, calculate your daily usage (300-500 MB for moderate use), multiply it by the number of travel days, and add a 20-30% buffer. A one-week trip with normal usage needs 3 to 5 GB; two weeks, between 8 and 10 GB; if you work remotely, this increases to 15-20 GB.

Before buying an eSIM for your trip, the inevitable question is: how many GB do I need? Buying too little and running out of data mid-trip is frustrating. Buying too much is a waste of money. This guide gives you the real data to calculate exactly what you need.

Actual consumption per activity (in MB per hour)

Here is the actual consumption data, measured under normal travel conditions:

How many GB you need according to your traveler profile

Light Traveler — 1 to 2 GB per week

You are a light traveler if:

• You use your mobile primarily for WhatsApp (text and photos, no video calls)
• You have Google Maps offline maps downloaded before you leave
• You connect to WiFi at the hotel or restaurants to download heavy content
• You don't use social media intensively outside the hotel
• You don't have work video conference meetings

With this profile, 1-2 GB per week is sufficient. For a 10-day trip, a 3 GB plan will give you peace of mind.

Moderate Traveler — 3 to 5 GB per week

This is the most common profile for today's traveler. You recognize yourself if:

• You frequently use Google Maps to get around (even with taxis or subway)
• You upload photos and stories to Instagram once or twice a day
• You use WhatsApp with videos and audio normally
• You consult reviews on TripAdvisor or Google while walking around
• You listen to Spotify while walking
• You do not work remotely during the trip

For this profile, 3-5 GB per week comfortably covers everything. For a two-week trip, an 8-10 GB plan is recommended.

Intensive Traveler — 8 to 15 GB per week

You are an intensive user if:

• You create content for social media (high-quality photos and videos, constant uploads)
• You have work meetings via Zoom or Teams during the trip
• You use your mobile as a WiFi hotspot for your laptop
• You watch YouTube or Netflix videos on public transport
• You work remotely full-time from your trip

For this profile, 10-15 GB per week is the minimum recommended. Look for unlimited or high-volume plans.

Digital Nomad — unlimited data or >20 GB

If travel is your usual office, unlimited or high-volume (20-50 GB) data plans are the right choice. The extra cost is worth it compared to the anxiety of running out of data in the middle of a video call with a client.

The mental calculator: how to calculate your GB before you leave

Use this quick formula:

1. Days of travel × your estimated daily consumption = base GB
2. Add a 20-30% buffer for unforeseen events (airport, delays, extra searches)
3. Subtract what you will use with hotel WiFi (if you know you'll have good connection most of the time)

Practical example: trip to Mexico, 10 days, moderate profile.

• Estimated consumption: 400 MB/day × 10 days = 4 GB
• 25% buffer: +1 GB
• Hotel WiFi at night (estimated 1 GB): -1 GB
• Recommended plan: 5 GB

Tips to spend less data without noticing the difference

With these simple adjustments, you can significantly reduce your consumption without changing your usage habits. If you want the complete list of advanced tricks, we have a dedicated guide just for this: how to save data on your travel eSIM.

Download offline maps before leaving

Google Maps allows you to download entire areas for offline use. A city like Mexico City takes up about 200 MB when downloaded. With offline maps, navigation consumes 10 times less data than without them. Always do this before leaving, using home WiFi.

Disable automatic video playback

Instagram, Twitter/X, and Facebook automatically play videos as you scroll. In each app's settings, you can configure videos to only play on WiFi. This alone can save you 300-500 MB per day if you use social media regularly.

Activate data saving on your phone

On iPhone: Settings → Mobile Data → Mobile Data Options → activate "Low Data Mode". On Android: Settings → Networks → Data Saver. This reduces background consumption of apps you are not actively using.

Use WhatsApp with reduced image quality

In the WhatsApp app → Storage and Data → Mobile network data usage → disable automatic download of photos and videos. Download them manually only when you want to view them.

Spotify in offline mode

Download your favorite playlists at home before you leave. Spotify streaming at normal quality consumes about 40 MB/hour — multiplied by flight hours, transfers, and walks, this adds up significantly.

Postpone app updates

Set apps to only update on WiFi (both on iPhone and Android). An app update can weigh between 100 MB and 1 GB. With mobile data, this can empty your plan without you realizing it.

Common myths and mistakes about travel data

There are several assumptions about mobile data while traveling that don't hold up when put to the test on the street. These are the most common.

"The more GB, the better, just in case"

This is the most expensive mistake. Buying 20 GB for a weekend in Lisbon is a waste of money: the price difference between a tailored plan and an oversized one does not compensate for the extra safety margin you gain. Calculate with the formula above and add a 20-30% buffer — not double.

"Hotel WiFi will always cover what I need"

Don't count on it. The WiFi in many mid-range hotels slows down after 8 PM when the whole building connects at once, or it simply cuts out in rooms furthest from the router. If your GB calculation depends on hotel WiFi to avoid running short, add an extra GB buffer — it's cheaper than the frustration of searching for coverage in the hallway.

"I need 5G to make the plan worthwhile"

5G doesn't save data, it consumes it faster because it loads content at a higher speed. What really matters is coverage, not the network generation: in many destinations, stable 4G LTE performs better than 5G with poor coverage that constantly jumps between networks and drains battery and data in the process. Here we explain when it's really worth seeking 5G for travel.

"An eSIM is the same as sharing data with my physical SIM"

No, they are two independent profiles on the same phone, and that's precisely what makes them useful: you can keep your Spanish number active for calls and SMS while using the eSIM only for data, without touching your physical card or relying on your operator having good coverage outside Spain. If you are still unclear on what an virtual eSIM is, we explain it in detail here.

"Maps and navigation hardly consume any data"

It largely depends on whether you downloaded them offline or not. Google Maps navigating in real-time with live traffic can consume 60-100 MB in an hour's car journey; the same journey with the map downloaded offline barely uses 10-15 MB. This is the difference between arriving with data to spare on your last night of travel or running out of data on day 5.

How much data do the different PuraSIM plans offer?

PuraSIM plans are designed for every type of traveler. These are the most popular:

• 3 GB — ideal for short trips (up to 5 days) with light or moderate usage
• 5 GB — the favorite for travelers on a 1-week trip with normal usage
• 10 GB — recommended for 2-week trips or moderate-intensive users
• 20 GB — for long trips or digital nomads with intensive usage
• Unlimited — available in some destinations, ideal for remote work

If you already know your destination, go straight to the plan: eSIM for Europe or eSIM for the United States are the most purchased. For other destinations, check the available plans for your destination — coverage and volume vary by region.

How much data does each popular travel app consume?

These are the most used travel apps and their approximate actual consumption per usage session:

• Google Translate with real-time camera: 10-30 MB per session
• Uber / Bolt for ordering a taxi: 5-15 MB per trip
• Booking / Airbnb for searching accommodation: 20-50 MB per search session
• Tripadvisor consulting restaurants: 10-30 MB per session
• Google Search normal browsing: 5-15 MB per search
• iMessage / SMS: practically nothing

What happens if I run out of data?

With a prepaid eSIM like PuraSIM, if you run out of data, the plan simply stops working — there are no additional automatic charges. You have several options:

• Buy a new eSIM plan instantly (can be done from your mobile)
• Activate data from your Spanish SIM (using roaming, with corresponding costs)
• Connect to your hotel's WiFi or a café until you can sort it out

That's why we always recommend buying a plan with a 20-30% buffer over your estimate. The extra cost of stepping up a GB tier is usually small — much less than the stress of running out of data.

If you're considering activating your Spanish operator's roaming as a backup plan, keep in mind that data roaming within the European Union (usually included in your rate) is not the same as outside it, where costs can skyrocket without warning as soon as your mobile connects to a local network. Here we explain exactly what data roaming is and when your plan covers you, and here we compare eSIM versus traditional roaming in depth so you can make an informed decision before your bill arrives.

Frequently asked questions about data consumption while traveling

How many GB do I need for 2 weeks outside Europe?

For a moderate traveler (Maps, Instagram, WhatsApp), 8-10 GB for two weeks is recommended. If you work remotely or create content, increase to 15-20 GB.

Do my plan's data accumulate or expire?

PuraSIM plans have a specific validity period (usually 30 days from activation). Unused data at the end of that period does not roll over to the next plan.

Can I share data with my partner or family?

The eSIM is personal to each device. If two or more people are traveling, each needs their own plan. However, you can activate the hotspot on your mobile to share the connection with other devices — be aware that consumption will multiply. If you travel with an iPhone and manage several profiles at once (work, personal, travel), it's good to know how many eSIMs you can have active at the same time — we explain it in this guide about eSIM profiles on iPhone.

Does receiving regular calls consume data?

No. Traditional phone calls use your operator's voice network, not data. WhatsApp, FaceTime, and Zoom do consume data.

Which eSIM is best if I visit several countries on the same trip?

If your route passes through several countries in the same region (e.g., an Interrail through Europe), look for a regional plan instead of a country-specific one: it saves you from activating a new eSIM every time you cross a border. If, on the other hand, they are destinations without joint regional coverage, you will need a plan per country and it's advisable to calculate the GB for each segment separately before leaving.

Is eSIM data slower than my physical SIM data?

No. The speed depends on the local operator's network you connect to, not whether the profile is physical or virtual. A well-configured eSIM uses the same 4G or 5G infrastructure as any local line in the country you are in.

Do I need to buy data if I'm only going to use WhatsApp and the hotel has WiFi?

If you genuinely plan to always be near reliable WiFi and your only use is text WhatsApp, you might not even need a large plan — 1 GB of buffer will be more than enough. But be honest with yourself when calculating: most travelers end up using their phone much more than they planned before leaving, so don't cut it short just to save a couple of euros.

Summary: quick recommendations by trip type

• Weekend (2-3 days), light use: 1-2 GB
• One week, moderate use: 3-5 GB
• Two weeks, moderate use: 8-10 GB
• Long trip (+3 weeks) or intensive: 15-20 GB or unlimited plan
• Digital nomad, remote work: unlimited plan or 20+ GB

If you still have doubts, the 5 GB plan is the most popular for a reason: it covers most week-long trips with enough margin not to worry. Check the available plans for your destination.

Written by Marc González Sáez Founder of PuraSim and a specialist in eSIM and connectivity for travelers. He has been helping people travel connected worldwide for years without overpaying for roaming, and personally tests eSIMs in each destination before recommending them.