Speed Conversion
Speed Conversion Results
Converted Speed
Converted result
--
Common Units
km/h
--
Metric speed
mph
--
Imperial speed
m/s
--
SI velocity
knots
--
Nautical speed
Scientific Units
ft/s
--
Feet per second
cm/s
--
Small scale speed
km/s
--
Space velocity
yd/s
--
Yards per second
High-Speed Units
Mach
--
Speed of sound
c (fraction)
--
Light speed fraction
Escape Velocity
--
Earth escape (fraction)
Furlongs/Fortnight
--
Humorous unit
Speed Conversion Reference
1 m/s = 3.6 km/h
1 km/h = 0.278 m/s
1 mph = 1.609 km/h
1 knot = 1.852 km/h
Sound speed = 343 m/s
Light speed = 299,792,458 m/s
Escape velocity = 11.2 km/s
Orbital velocity = 7.9 km/s
Mach 1 = 343 m/s (sea level)
Supersonic > Mach 1
Hypersonic > Mach 5
Walking ≈ 1.4 m/s
Quick Reference
What this tool does
Speed Conversion
Universal speed conversion calculator for all velocity units. Convert between km/h, mph, m/s, knots, Mach, and other speed measurements with precision and comprehensive analysis.
How the calculation works
Enter a value, choose the relevant units, and the tool applies the standard relationship between those units to calculate the result.
Part of Speed & Motion Conversion Tools.
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