Visit Cosmeo for explanations and help with your homework problems!

Units Conversions on Speed

U.S. residents: is driving 100 km/hr considered "fast?"
Non-U.S. residents: is driving 100 miles/hr considered "fast?"

The most common units of speed are the mile per hour (mph) and the kilometer per hour. This page will help you to convert between these two units.

I want to convert



Quick! I need help with: