⚡ Speed Converter
Convert between 5 speed units instantly.
⚡ Enter Speed
📊 Conversions
Kilometers/hour (km/h)100
Miles/hour (mph)62.1371
Meters/second (m/s)27.7778
Feet/second (ft/s)91.1344
Knots (kn)53.9957
Conversion Formulas
km/h → m/s
m/s = km/h ÷ 3.6
mph → km/h
1 mph = 1.60934 km/h
knot → km/h
1 knot = 1.852 km/h
Frequently Asked Questions
How fast is 100 km/h in m/s?
About 27.78 m/s. 100 ÷ 3.6 = 27.78.
How fast is Mach 1 in km/h?
About 1,234.8 km/h (at 15°C, sea level).