Speed Converter
Convert speed between mph, km/h, knots, m/s, and feet per second. Useful for travel, aviation, maritime, and physics — handles all common speed units instantly.
m/s
0.27777778
km/h
1
mph
0.62137119
ft/s
0.91134442
Knots
0.53995727
Speed of light
9.2656693e-10
How to use the speed converter
Convert between common speed units, including knots used in maritime/aviation.
Formula & explanation
Linear scaling through meters per second.
Examples
60 mph ≈ 96.56 km/h ≈ 26.82 m/s. 1 knot = 1.852 km/h.
Frequently asked questions
- How do I convert mph to km/h?
- Multiply mph by 1.60934. For example, 60 mph × 1.60934 ≈ 96.56 km/h.
- What is a knot in mph?
- 1 knot equals approximately 1.151 mph or 1.852 km/h. Knots are used in maritime and aviation contexts.
- How fast is the speed of light in km/h?
- The speed of light is approximately 1,079,252,848 km/h (about 299,792 km/s).
- How do I convert km/h to m/s?
- Divide km/h by 3.6. For example, 90 km/h ÷ 3.6 = 25 m/s.
Related unit converters tools
- Energy ConverterConvert energy between joules, calories, kilocalories, kilowatt-hours, BTU, and electron volts. Useful for physics, nutrition, and engineering calculations.
- Weight ConverterConvert weight between kilograms, pounds, ounces, grams, stones, and metric tons. Handles both metric and imperial units — useful for cooking, shipping, and fitness tracking.
- Time ConverterConvert time between seconds, minutes, hours, days, weeks, months, and years. Useful for project estimates, API timeout values, and unit conversions in calculations.
- Power ConverterConvert power between watts, kilowatts, megawatts, horsepower, BTU/hour, and foot-pounds per second. Useful for electrical engineering, automotive, and HVAC calculations.
- Force ConverterConvert force between newtons, pounds-force, kilonewtons, dynes, and kilograms-force. Useful for physics, mechanical engineering, and structural calculations.
- Pressure ConverterConvert pressure between pascals, bar, psi, atm, mmHg, and kilopascals. Useful for meteorology, hydraulics, pneumatics, and tire pressure conversions.