Speed

Convert speed and velocity: kilometres per hour, miles per hour, metres per second, knots, feet per second and mach, with exact factors both ways.

9 free speed tools, no signup.

• KMH to MPH ConverterConvert kilometers per hour to miles per hour instantly, and back. Based on the exact 1 mile = 1609.344 m definition.
• Knots to KMH ConverterConvert knots to kilometers per hour instantly, and back. Based on the exact 1 knot = 1.852 km/h definition.
• Knots to MPH ConverterConvert knots to miles per hour instantly, and mph back to knots. Based on 1 knot = 1 nautical mile per hour = 1.150779 mph.
• Meters per Second to KM/H ConverterConvert meters per second to kilometers per hour instantly, and back. Based on the exact 1 m/s = 3.6 km/h value.
• Meters per Second to MPH ConverterConvert meters per second to miles per hour and back. Enter a speed in m/s and read the result in mph or km/h.
• MPH to KMH ConverterConvert miles per hour to kilometers per hour instantly, and back. Based on the exact 1 mile = 1609.344 m definition.
• MPH to Knots ConverterConvert miles per hour to knots instantly, and knots back to mph. Based on 1 mile = 1609.344 m and 1 nmi = 1852 m.
• MPH to Meters per Second ConverterConvert miles per hour to meters per second instantly, and back. Based on the exact 1 mph = 0.44704 m/s value.
• Speed ConverterConvert speed between km/h, mph, m/s, ft/s, and knots. Exact conversions with a one-click swap of direction.