Speed Converter

Convert between miles per hour, kilometers per hour, knots, meters per second, and more speed units with our free online converter.

Speed Conversion Tool

Result

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Kilometers per Hour (km/h)

Speed Conversion Insights

Convert MPH, KPH, knots, and m/s for travel, logistics, and engineering. For projects that require distance or time calculations, combine this tool with our Length Converter and Unit converter area.

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Frequently Asked Questions - Speed Conversion

How do I convert miles per hour to kilometers per hour?

To convert MPH to KPH, multiply the speed in miles per hour by 1.60934. For example, 60 MPH = 60 × 1.60934 = 96.56 KPH.

What is a knot in speed measurement?

A knot is a unit of speed equal to one nautical mile per hour. It's commonly used in maritime and aviation contexts. 1 knot = 1.15078 MPH.

How do I convert meters per second to miles per hour?

To convert m/s to MPH, multiply by 2.23694. For example, 10 m/s = 10 × 2.23694 = 22.37 MPH.

What is Mach speed?

Mach is a unit of speed relative to the speed of sound. Mach 1 equals the speed of sound (approximately 343 m/s or 767 MPH at sea level).

How fast is the speed of light?

The speed of light is approximately 299,792,458 meters per second (about 186,282 miles per second or 670,616,629 MPH).

Speed Converter - Convert MPH, KPH, Knots & More | Unit Converter