eSIM price-per-GB calculator
Price-per-GB = plan price ÷ GB. Enter any eSIM plan's price and data allowance to get its $/GB, then compare two plans side by side to see which is the better value. For unlimited plans, switch the toggle to get cost-per-day instead. Everything runs in your browser — nothing is stored or sent anywhere.
How it works
For fixed-data plans, value = price ÷ GB (price-per-GB). The lower the
$/GB, the better the deal — which is why a larger plan usually wins. For unlimited
plans there is no GB cap, so the calculator switches to price ÷ days (cost-per-day).
The result updates as you type and nothing leaves your device.
Want real prices to plug in? See the cheapest eSIM by country tables or the provider guides. All site prices are a June 2026 snapshot — confirm on the provider's site before buying.
Frequently asked questions
How do you calculate eSIM price-per-GB?
Price-per-GB is simply the plan price divided by its data allowance in GB. For example, a $16 plan with 5 GB is $16 ÷ 5 = $3.20 per GB. It is the fairest way to compare plans of different sizes because a bigger plan almost always costs less per GB.
Is a bigger eSIM plan always cheaper per GB?
Almost always, yes. Providers price larger plans at a lower per-GB rate, so a 10 GB plan usually beats a 1 GB plan on $/GB. Just don't buy far more data than you'll use — unused GB is wasted money.
How do I compare an unlimited plan to a fixed plan?
An unlimited plan has no GB cap, so it has no meaningful $/GB. Instead, divide its price by the number of days for a cost-per-day, then estimate how much data you'd actually use on a fixed plan. If your estimated usage on a fixed plan costs less than the unlimited plan, the fixed plan wins.
Last updated: 2026-06-18