Free tool
Roaming Bill Calculator
See what your carrier will charge for roaming, then see what a travel eSIM costs for the same trip. The difference is your savings.
Your trip details
AT&T charges $10.00/day with the pass.
$70.00
AT&T $10.00/day x 7 days
$13.50
3 GB on Airalo at ~$4.50/GB
You save
81%
$56.50 saved
by switching from AT&T roaming to a travel eSIM
Ready to stop paying roaming charges?
Find the best eSIM for your destination and save 81%+ on every trip.
Find your destinationWhy the numbers look like this
Carrier roaming works on a daily pass model. AT&T and Verizon charge $10/day the moment your phone connects to a foreign network. T-Mobile includes slow 2G data on Magenta plans but charges $5-15/day for usable high-speed data. UK carriers charge £2-6/day.
A travel eSIM connects to the same local network at local rates. No daily pass, no per-MB surcharge, no middleman markup. The savings scale with trip length: a weekend trip saves $30-50, a two-week trip saves $100-200+.
The calculator uses each carrier's published international roaming rates as of June 2026. eSIM pricing uses Airalo's average $4.50/GB baseline. Actual costs vary by destination.
Calculator questions, answered
How accurate is this roaming bill calculator?
Carrier rates are sourced from official pricing pages and verified monthly. Actual bills may vary based on your specific plan, add-ons, and usage patterns. This calculator uses standard roaming pass rates as a baseline.
What does the eSIM alternative cost?
The calculator uses Airalo's average pricing of $4.50/GB as the eSIM baseline. Actual eSIM costs vary by destination and provider. Holafly offers unlimited daily plans from $2.99/day as an alternative.
Do I still get charged if I have a roaming pass?
Yes. Most carrier roaming passes charge a daily fee that activates the moment your phone connects to a foreign network, even if you use zero data. The daily charge applies every day your phone is abroad with roaming enabled.
How do I actually avoid these charges?
Turn off data roaming in your phone settings before departure. Install a travel eSIM while on WiFi. Set the eSIM as your data line when you land. Use WiFi Calling for voice calls. Your home number stays active with zero roaming fees.