travel · free Companion App · local in this browser
Roaming vs eSIM Travel Data Calculator
Compare carrier roaming pass cost to a local eSIM/SIM for your trip length.
Privacy: This App does not send or save your entries. Do not enter passwords, codes, full account numbers, or private identifiers.
Enter your numbers
Enter only the details needed for this task. Check them against the original source.
Your result
Your result will appear here.
Engine self-test
Running golden cases…
Source notes
- U.S. Federal Communications Commission — Wireless Roaming
International roaming rates and day passes vary by carrier; travelers should compare roaming prices to local SIM or eSIM options before leaving.
Reviewed 2026-10-10. Prices and coverage change constantly; check your carrier and destination options before departure.
What this App does not do
This compares prices you enter. Check coverage for your destination.
This free App has no paid features. It does not contact an agency, employer, bank, seller, provider, or other person.