Convert miles to km.
1 mile = 1.60934 km. Divide km by 1.60934 to get miles.
Used for road distances and speed limits.
The UK is a notable in-between case — it went metric for most measures decades ago but kept miles for road signage and speed limits, which is a common source of confusion for visiting drivers.
1 mile = 1.6093 km.
Multiply miles by 1.6, or km by 0.62 — accurate to within a few percent for everyday numbers.
Historical inertia. UK road signs and speed limits remain in miles despite metric adoption elsewhere.
Mainly the US, UK, and a small number of others like Liberia and Myanmar — nearly everywhere else uses kilometers on road signage.