How much mobile data will you need in Italy?

Look at your phone’s mobile-data usage over a known period and divide the total by its number of days. Keep Wi-Fi traffic out of that figure. On Pixel, use Settings, Network & internet, SIMs and App data usage to inspect the period and the largest apps.

Use a representative day rather than a quiet day spent entirely on Wi-Fi. Think about navigation, uploading photos, video calls and work. Use those habits to decide whether your normal daily consumption is a sensible starting point. Enter your measured daily amount in the planner below.

A laptop using your phone’s hotspot draws from the same mobile-data allowance. Before buying, check whether the selected plan permits tethering and whether it has a separate hotspot limit. Do not assume that every unlimited plan offers unlimited full-speed hotspot data.

Count arrival and departure days, not just hotel nights. An optional allowance for extra use is a planning choice, not a promise that a particular number will last. The calculator uses your figures and decimal units: 1,000 MB equals 1 GB.

A large data allowance is no help if the plan expires before the journey ends. Check the activation rule, length of validity and top-up options together. For an unlimited plan, read the fair-use and speed conditions as carefully as the headline.

Download maps and large media while on reliable Wi-Fi, and review background syncing if you want to conserve the travel allowance. After arrival, use the provider’s balance as the reference for the purchased plan; the phone and provider can measure usage differently.