How much mobile data do I need? (2026 guide)
A no-fluff guide to sizing a travel eSIM plan. Read the activity rates, skim the country notes, then plug your habits into the calculator.
6-minute read
The short answer
Most travellers spend 70–90% of their mobile data on three activities: video streaming, social media, and navigation. Everything else (messaging, music, occasional browsing) is a rounding error by comparison. If you size for those three correctly, the plan is the right size.
As a rule of thumb: 1 GB per day is comfortable for casual use with regular Wi-Fi, 2–3 GB per day is comfortable for heavy social/video use, and anything above 5 GB per day is hotspot-territory (tethering a laptop, sharing with family).
How activities consume data
These are 2026 averages — apps optimise codecs every year, so SD video uses about half what it did in 2021, but HD and 4K kept getting heavier:
- Video streaming: 700 MB/hour at SD, 3 GB/hour at HD, 7 GB/hour at 4K. Defaulting to SD on cellular cuts streaming costs by 75%.
- Social media (Instagram, TikTok, X): 600 MB/hour on average. Vertical autoplay video is the killer; muting autoplay reduces this by 30–50%.
- Maps and navigation: 30 MB/hour active. Downloading offline maps for the city you're visiting eliminates this entirely.
- Music streaming (Spotify, Apple Music): 50 MB/hour standard, 150 MB/hour high-quality. Downloading playlists on hotel Wi-Fi sidesteps the issue.
- Video calls (FaceTime, WhatsApp, Zoom): 240 MB/hour SD, 800 MB/hour HD. Voice-only calls are 30 MB/hour.
- Web browsing and messaging: ~60 MB/hour combined, including images. Background syncs add another ~50 MB/day.
Try the calculator
Set your trip length, destination, and habits. Results update instantly.
Your data recommendations
Tight
14.4GB
Enough if Wi-Fi is reliable; expect rationing late in the trip.
Comfortable
17.9GB
Recommended. Covers daily activities with a small margin.
Stress-free
28.7GB
Generous buffer. Heavy social and video without checking usage.
Wi-Fi availability is the biggest variable
The calculator's wifi setting offsets cellular usage by 20% (low), 40% (medium), or 60% (high). A medium-to-high Wi-Fi destination is the difference between a 5 GB plan and a 12 GB plan for the same trip — bigger than streaming quality, bigger than trip length.
Hotels in Western Europe, East Asia, and the urban Middle East almost always have free in-room Wi-Fi. The US, Latin America, and Africa are more uneven. Cafés in most major cities have free Wi-Fi but expect to make a purchase. Trains and buses are slowly catching up; long-haul flights are not yet.
Country-specific considerations
A handful of destinations distort the calculation. Mainland China requires a VPN for many travel apps and blocks Google Maps; expect to use more cellular than Wi-Fi for navigation as Baidu Maps fills the gap. India's KYC rules mean local eSIM is essentially travel-eSIM-only; the rates are unaffected but plan ahead.
Japan and South Korea have the world's best public Wi-Fi — coffee shops, convenience stores, train stations — so plans there can be smaller than the calculator suggests. Morocco, rural Italy, and most of Sub-Saharan Africa have lower café Wi-Fi penetration; size up.
Five practical tips
- Download offline maps for every city before you leave home Wi-Fi.
- Default streaming apps to SD on cellular. Netflix, YouTube, and Spotify all have a setting.
- Disable auto-update for apps and large media downloads while travelling.
- If you tether a laptop or share with family, multiply the calculator output by the number of devices.
- Most eSIM providers let you top up mid-trip in 30 seconds. Start with Comfortable, top up if you blow through it.
FAQ
- What's the average mobile data usage per day while travelling?
- Across all travel-eSIM customers, the median is about 600 MB/day. Heavy users (video + social) clock 2–3 GB/day. Light users (mostly maps + messaging) sit at 200–300 MB/day.
- How much data do I need for a 7-day trip to Europe?
- With high Wi-Fi availability and average habits, 3–5 GB is enough. If you'll stream video on long train rides or tether a laptop, plan for 8–10 GB.
- Is 1 GB per day enough?
- For casual social media, maps, messaging, and occasional photos — yes. For daily video calls, streaming HD, or tethering — no, plan for 2–3 GB/day.
- Can I share my eSIM data with my partner's phone?
- Yes, via personal hotspot. Most travel eSIMs allow tethering, but it doubles your consumption. Size accordingly.
- What happens if I run out of data mid-trip?
- Most eSIM providers let you top up directly in their app in 30 seconds. Some throttle to 128 kbps instead of cutting off entirely. Read the fine print before buying.