How much eSIM data do you need — and what will roaming and fees cost?
For 14 days of normal use, TripUtils estimates 6–9 GB. Then compare roaming, card fees and cabin-bag limits. Free, no signup.
- Prices checked 22 Oct 2026
- Independent comparison
- Free, no signup
Popular destinations
eSIM data, roaming, money and plugs – everything for your trip in one place.
Spend less on the trip
Eight free tools – no signup, with sources and check dates.
eSIM
How many GB you need – then open the right plan for the country.
Calculate data →Roaming
Turn a daily roaming fee into a trip total and compare with an eSIM.
Compare costs →Money
Card or ATM? Markup and ATM fees at a glance.
Compare fees →Carry-on
Check your bag against Ryanair, Wizz or easyJet limits.
Check sizes →Budget
What does a day cost? Range by travel style, flights excluded.
Plan budget →Flight delay
€250, €400 or €600 under EU261 – with calculator.
Check your claim →Plugs
Do you need an adapter? Plug type and voltage by country.
Check plugs →True offer cost
Add bags and resort fees to two quotes before booking.
Compare quotes →Destinations by region
Inside the EU your home plan usually applies (roam like at home). Outside it – Turkey, Switzerland, the UK, the Balkans, long-haul – compare with an eSIM.
Europe & EU 11
Balkans (non-EU) 6
Asia 15
North America 2
Latin America & Caribbean 2
Middle East & Africa 4
🇯🇵 eSIM Japan 7 days🇯🇵 eSIM Japan 30 days🇹🇭 eSIM Thailand 7 days🇹🇭 eSIM Thailand 30 days🇮🇹 eSIM Italy 7 days🇮🇹 eSIM Italy 30 days🇪🇸 eSIM Spain 7 days🇪🇸 eSIM Spain 30 days🇺🇸 eSIM United States 7 days🇺🇸 eSIM United States 30 days
Guides
The key questions before you travel – with real prices and sources.
Cabin bag by airline
Listed sizes with a last-checked date. Always confirm your booking.
Independent – how we make money
Some links (e.g. Saily, Wise, Yesim, Airalo, AirHelp) are affiliate links. If you buy through them we may earn a small commission at no extra cost to you. It never changes the calculators: if EU roaming or your home plan is cheaper, we say so.
Read the affiliate disclosure →How we calculate
- Data: days × typical use (maps, messaging, social) plus a buffer – hotel Wi‑Fi is not counted.
- Prices: dated snapshots from saily.com and Austrian operators, with source and check date on each page.
- No invented “from €X” prices. Always confirm the live price on the provider site.
Prices checked 22 Oct 2026
Common questions
How much eSIM data do I need for 14 days?
With normal daily use, TripUtils estimates 6–9 GB, with a safer buffer of 10 GB. Hotel Wi‑Fi is not counted. Streaming video on mobile is the usual reason to go larger. Inside the EU, home roaming often already covers the trip; outside it, open Saily for that country.
Is EU roaming cheaper than a travel eSIM?
If your home SIM is an EU/EEA plan, roam-like-at-home often already covers France, Spain or Italy. Outside that zone — the UK, Switzerland, the US, Japan, Thailand — type your carrier’s daily fee into the roaming tool and compare a prepaid eSIM for the same days.
Do you show live travel-provider prices?
No. This site estimates data size and fee maths from numbers you enter. Live plans belong on the provider site.
What is the free Ryanair cabin bag size?
The included under-seat bag stored here is 40 × 30 × 20 cm. 55 × 40 × 20 cm is the Priority product. Always confirm the allowance on your booking.