Speed Converter
Result:
Supported units
Convert between meters per second (m/s), kilometers per hour (km/h), miles per hour (mph), knots (kt), feet per second (ft/s), and mach. Exact factors are used, including 1 mph = 0.44704 m/s.
Popular pairs
- mph <-> km/h
- m/s <-> km/h
- knots <-> mph
- mph <-> ft/s
How to use
Pick your from/to units using the search boxes, enter a value, and the result updates instantly. Use the copy button to grab the output.
Related converters
- Length Converter (meters, feet, miles)
- Time Converter (seconds, minutes, hours)
- Power Converter (watt, horsepower)
Speed Converter FAQ
Are the conversions exact?
Yes. We use exact constants like 1 mph = 0.44704 m/s and 1 knot = 1.852 km/h for consistent results.
Can I convert between mph and knots?
Yes. Enter your value in mph and select knots as the target (or vice versa); results update instantly as you type.
Does this handle very small or very large speeds?
Yes. You can convert down to small speeds (ft/s) or up to mach with high precision using Decimal arithmetic.