Speed limits in different countries use different units. US uses mph, most of Europe uses km/h. Rent a car abroad and you'll want to convert!

Common Conversions

60 mph is about 97 km/h. 100 km/h is roughly 62 mph. These are good numbers to remember. But for anything precise, a converter is your friend.

Also: knots for sailors, m/s for scientists. Speed converters handle all of these!