Speed Converter

Unit Converter

Speed converter: km/h, mph, knots and m/s

Road limits use km/h in many countries and mph in others. Knots are common in aviation and shipping, while metres per second appear in physics. Each unit represents a different scale for the same physical speed.

Common speed conversion examples

• 1 km/h ≈ 0.2777778 m/s
• 1 mile per hour = 1.609344 km/h
• 1 knot = 1.852 km/h
• 1 m/s = 3.6 km/h

How to convert mph to km/h

Multiply miles per hour by 1.609344. For example, 60 mph is about 96.56 km/h. To turn metres per second into km/h, multiply by 3.6.

What is a knot?

A knot is one nautical mile per hour. It is widely used in marine navigation and aviation.