Everyday Conversions for International Travel

The three numbers that actually change when you cross a border.

Units come first since they affect the most basic, physical sense of a place -- temperature, distance, weight -- and getting comfortable with unfamiliar units early avoids confusion for the rest of the trip. Currency follows because once units feel normal, the next mental adjustment is what things actually cost in terms you understand. Time zone is last because it matters less moment-to-moment during the trip itself and more for the specific, practical task of knowing when it's reasonable to call home.

Each step opens as its own tool -- download from one, upload into the next, same as any free tool on the site.