Speed Unit Definitions
Our Speed Converter helps you easily convert between kilometers per hour, miles per hour, meters per second, and knots. Ideal for drivers, athletes, and travelers, this tool ensures accurate speed conversions for road trips, running pace, cycling speed, and aviation navigation.
Kilometer per Hour (km/h)
Kilometers per hour is a unit of speed expressing the number of kilometers traveled in one hour. It is commonly used worldwide for road speed limits, vehicle speeds, and general velocity measurements.
Mile per Hour (mph)
Miles per hour is a unit of speed expressing the number of miles traveled in one hour. It is primarily used in the United States and United Kingdom for road speed limits and vehicle speeds. One mph equals approximately 1.609 km/h.
Meter per Second (m/s)
Meters per second is the SI derived unit of speed. It expresses the number of meters traveled in one second. It is commonly used in physics, sports, and scientific applications.
Knot (kn)
A knot is a unit of speed equal to one nautical mile per hour. It is commonly used in maritime and aviation contexts. One knot equals approximately 1.852 km/h or 1.151 mph.
Foot per Second (ft/s)
Feet per second is a unit of speed expressing the number of feet traveled in one second. It is commonly used in physics calculations and in some engineering applications, particularly in the United States for measuring fluid flow and projectile velocities.
Frequently Asked Questions on Speed Conversion
Q: How to convert mph to kph?
Multiply miles per hour by 1.609344. Example: 60 mph = 96.56 kph.
Q: What is the speed of sound?
The speed of sound is approximately 1,125 feet per second (768 mph or 1,235 kph) at sea level and room temperature.
Q: How fast is Mach 1?
Mach 1 is the speed of sound. At sea level, this is about 761 mph (1,225 kph). Speed of sound varies with altitude and temperature.
Popular Speed Conversions
Common searches: mph to kph | kph to mph | m/s to kph | knots to mph.
Our free online speed converter provides instant, accurate results for mph to kph, m/s to kph, and knots to mph and more. Perfect for vehicles, sports, aviation, and physics calculations.