Speed Converter: km/h, mph, m/s
Quickly convert speed values between kilometers per hour (km/h), miles per hour (mph), and meters per second (m/s).
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Frequently asked questions
How do I convert km/h to mph?
To convert kilometers per hour (km/h) to miles per hour (mph), multiply the speed by 0.621371. For example, 100 km/h is approximately 62.14 mph.
What is the formula to convert m/s to km/h?
To convert meters per second (m/s) to kilometers per hour (km/h), multiply the value by 3.6. So 10 m/s equals 36 km/h.
What is the difference between mph and knots?
Both measure speed, but mph is used on land and knots are used in maritime and aviation contexts. One knot equals one nautical mile per hour, approximately 1.15078 mph.
What Is a Speed Converter?
A speed converter is an online tool that instantly transforms speed measurements between different units, such as kilometers per hour (km/h), miles per hour (mph), and meters per second (m/s). It is useful for drivers, athletes, students, and professionals who need quick and accurate conversions without manual math.
How to Use This Speed Converter
Using our speed converter is simple. Enter the speed value you want to convert, select the current unit, and choose the target unit. The result appears instantly. You can convert km/h to mph, mph to m/s, or any other combination. No need to download anything.
Common Speed Conversion Formulas
For quick reference, remember these formulas: 1 km/h = 0.621371 mph, 1 mph = 1.60934 km/h, and 1 m/s = 3.6 km/h. For example, 60 mph equals 96.56 km/h. Our converter applies these formulas automatically for accurate results every time.