Roaming Cost vs eSIM Calculator
Enter your home country and destination to compare carrier roaming fees vs eSIM prices. Real data from carriers across 10 countries.
Carrier Roaming Cost
3GB over 7 days
AT&T
Daily pass $84.00/day (unlimited)
$84.00
T-Mobile
Daily pass $35.00/day (5GB/day)
$35.00
Verizon
Daily pass $70.00/day (2GB/day)
$70.00
MyeSIM Cost
3GB / 30-day plan
MyeSIM
Instant activation, no SIM swap
$8.50
Popular Route Cost Comparison
7-day trip, 3GB data usage
| Route | Roaming (lowest) | MyeSIM | Savings |
|---|---|---|---|
| US → Japan | $35.00 | $8.50 | 76% |
| US → UK | $35.00 | $9.99 | 71% |
| China → Japan | $122.88 | $8.50 | 93% |
| China → Thailand | $122.88 | $6.99 | 94% |
| UK → US | $35.00 | $10.99 | 69% |
| Japan → US | $105.00 | $10.99 | 90% |
| Australia → Japan | $56.00 | $8.50 | 85% |
| Korea → Japan | $70.00 | $8.50 | 88% |
Why Is International Roaming So Expensive?
Inter-Carrier Settlement Fees
When you roam abroad, your home carrier pays the local network operator for access. These wholesale settlement fees are marked up and passed to consumers, resulting in prices far higher than what local users pay for the same data.
How eSIM Bypasses Expensive Roaming
eSIM travel plans purchase wholesale data directly from local carriers, cutting out the middleman markup. You get local speeds at near-local prices — typically 70-95% cheaper than roaming. Plus, eSIM activates instantly with no airport SIM card queues.
The Hidden Cost of Daily Passes
Many carriers offer 'daily passes' to simplify roaming billing (e.g., AT&T $12/day, Verizon $10/day). Sounds reasonable, but 7 days costs $70-84 — while an equivalent eSIM plan is just $8.50. Daily passes may also have data caps with throttling after the limit.
Frequently Asked Questions
- How much does international roaming cost?
- International roaming costs vary widely by carrier and destination. US carriers like AT&T charge $2.05/MB pay-as-you-go or $10-12/day for a daily pass. Using 3GB of data over a 7-day trip could cost $35-84 in roaming fees, compared to just $8.50 for an eSIM plan — a savings of 75-90%.
- Is eSIM cheaper than international roaming?
- Yes, significantly. eSIM travel plans typically cost 70-95% less than carrier roaming. For example, a 3GB Japan eSIM costs $8.50 on MyeSIM, while AT&T's International Day Pass costs $84 for the same 7-day period. Even carriers with competitive roaming (like T-Mobile) are 2-5x more expensive than eSIM.
- Can I use eSIM and keep my phone number?
- Yes! That's one of the biggest advantages of eSIM for travel. Your eSIM data plan works as a second line alongside your existing physical SIM. You keep your home phone number for calls and texts while using the eSIM for cheap local data abroad.
- How accurate is this roaming cost calculator?
- Our calculator uses real roaming rates published by major carriers (AT&T, T-Mobile, Verizon, China Mobile, EE, Vodafone, etc.) as of April 2026. Actual costs may vary based on your specific plan, promotions, and carrier policy changes. Always confirm current rates with your carrier before traveling.
- What's the cheapest way to use data abroad?
- eSIM is generally the cheapest and most convenient option. Buy a travel eSIM plan before departure, activate it when you land, and enjoy local-speed data at a fraction of roaming cost. No need to find a SIM card store at the airport or deal with carrier roaming surprises on your bill.