Speed Converter

1 mph = 1.60934 km/h · 1 knot = 1.852 km/h

Speed, Time & Data

How to Use This Tool

Speed Conversion Reference

Convert between common speed units for driving, aviation, marine, and scientific applications.

Common Speed Equivalents

  • 1 mph = 1.60934 km/h = 0.44704 m/s
  • 1 km/h = 0.621371 mph = 0.277778 m/s
  • 1 knot = 1.15078 mph = 1.852 km/h = 0.514444 m/s
  • 1 m/s = 3.6 km/h = 2.23694 mph

The knot is a nautical mile per hour, where 1 nautical mile = 1852 meters exactly.

Formula & Explanation

Speed conversions combine a distance conversion with a time conversion. The knot is defined as exactly 1 nautical mile per hour, where 1 nautical mile = 1852 m exactly.

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Frequently Asked Questions

How fast is 60 mph in km/h?

60 mph = 60 u00d7 1.60934 = 96.56 km/h. This is a common highway speed limit in the US.

What is a knot?

A knot is one nautical mile per hour. 1 knot = 1.852 km/h = 1.15078 mph. Knots are used in aviation and maritime contexts because nautical miles are the standard distance unit on water and in the air.

How do I convert m/s to km/h?

Multiply by 3.6. For example, 10 m/s = 36 km/h. This works because 1 m/s = 3.6 km/h.