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Speed Unit Converter

Enter the speed and select the units to convert from and to:

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See also
Mph-kmph converter
Area converter
Volume converter
Length converter
All Unit Converters

Characteristic speeds

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FieldObjectSpeed inRemarks
SpaceAverage orbital speed of Earth around the Suninfo
Escape velocity from Earth's gravityinfo
Earth equator tangential speed (due to rotation)info
Average orbital speed of Moon around the Earthinfo
HumanHuman 100m record top (Usain Bolt, 1009)info
Human 100m record average (Usain Bolt, 2009)info
Human 1 mile record average (Hicham El Guerrouj, 1999)info
Human 5K road run record average (Sammy Kipketer, 2000)info
Human 10000m record average (Kenenisa Bekele, 2005)info
Human marathon record average (Dennis Kimetto, 2003)info
Human preferred walking (non athletic)info
AnimalsPeregrine falcon diveinfo
Black marlin top (estimated by fishing line unwinding)info
Spine-tailed swift recordedinfo
Cheetah top recordedinfo
Horse gallop averageinfo
NatureMaximum recorded wind gust (not tornado)info
Sound through air (sea level, 20° C)info
Sound through freshwater (25° C)info
Seismic p-waves through graniteinfo
Tsunami travel (at 5km depths)info
Nazca tectonic plate absoluteinfo
Gulf stream maximum (near surface)info
TechnologyBugatti Veyron Super Sport (2010)info
Land record (ThrustSSC 1997)info
Land record by wheel driven vehicle (Vesco Turbinator 2001)info
Lockheed SR-71A Blackbird (1976) recordinfo
General Dynamics F16C Block 50 at sea levelinfo
Water record (Spirit of Australia, 1978)info
Class Nimitz aircraft carrierinfo
Muzzle velocity of kinetic energy ammunition fired by a tank guninfo
International Space Station average orbital speedinfo
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Convert to all other units

Enter a value to thespeed field above, in order to see the results in this table.

SystemConvert to:Result
SIMillimeters per second [mm/s]
Millimeters per hour [mm/h]
Millimeters per day [mm/day]
Millimeters per year [mm/year]
Centimeters per second [cm/s]
Centimeters per hour [cm/h]
Centimeters per day [cm/day]
Centimeters per year [cm/year]
Meters per second [m/s]
Meters per hour [m/h]
Meters per day [m/day]
Meters per year [m/year]
Kilometers per second [km/s]
Kilometers per hour [km/h]
Kilometers per day [km/day]
Kilometers per year [km/year]
ImperialInches per second [in/s]
Inches per hour [in/h]
Inches per day [in/day]
Inches per year [in/year]
Feet per second [ft/s]
Feet per hour [ft/h]
Feet per day [ft/day]
Feet per year [ft/year]
Yards per second [yd/s]
Yards per hour [yd/h]
Yards per day [yd/day]
Yards per year [yd/year]
Miles per second [mi/s]
Miles per hour [mph]
Miles per day [mi/day]
Miles per year [mi/year]
Knots (naut. miles per hour) [kn]
EmpeiricalMach (sea level, 20° C ) [M]
AstronomicalNatural speed units [c]
Astronomical units per sec [au/s]
Astronomical units per sec [au/h]
Astronomical units per day [au/day]
Astronomical units per year [au/year]
See also
Mph-kmph converter
Area converter
Volume converter
Length converter
All Unit Converters

Relationships between units of speed

Select a unit:
SystemUnitSpeed inInfo
SI1 Millimeter per second [mm/s] =1 mm/s = 3.6 m/h = 0.001 m/s
1 Millimeter per hour [mm/h] =1 mm/h ≈ 2.77778 x 10-7 m/s
1 Millimeter per day [mm/day] =1 mm/day ≈ 1.15741 x 10-8 m/s
1 Millimeter per year [mm/year] =1 mm/year ≈ 3.1688 x 10-11 m/s
1 Centimeter per second [cm/s] =1 cm/s = 36 m/h = 0.01 m/s
1 Centimeter per hour [cm/h] =1 cm/h ≈ 2.77778 x 10-6 m/s
1 Centimeter per day [cm/day] =1 cm/day ≈ 1.15741 x 10-7 m/s
1 Centimeter per year [cm/year] =1 cm/year ≈ 3.1688 x 10-10 m/s
1 Meter per second [m/s] =1 m/s = 3.6 km/h ≈ 3.2808 ft/s ≈ 2.2369 mph [more... ]
1 Meter per hour [m/h] =1 m/h ≈ 2.77778 x 10-4 m/s [more... ]
1 Meter per day [m/day] =1 m/day ≈ 1.15741 x 10-5 m/s
1 Meter per year [m/year] =1 m/year ≈ 3.1688 x 10-8 m/s
1 Kilometer per second [km/s] =1 km/s = 1000 m/s = 3600 km/h ≈ 2236.9 mph
1 Kilometer per hour [km/h] =1 km/h = 1.609344 mph ≈ 0.27778 m/s ≈ 0.91134 ft/s [more... ]
1 Kilometer per day [km/day] =1 km/day ≈ 11.5741 mm/s
1 Kilometer per year [km/year] =1 km/year ≈ 0.031688 mm/s ≈ 0.11408 m/h
Imperial1 Inch per second [in/s] =1 in/s = 0.0254 m/s = 25.4 mm/s ≈ 0.08333 ft/s [more... ]
1 Inch per hour [in/h] =1 in/h ≈ 2.77778 x 10-4 in/s ≈ 7.0555 x 10-6 m/s
1 Inch per day [in/day] =1 in/day ≈ 1.15741 x 10-5 in/s ≈ 2.9398 x 10-7 m/s
1 Inch per year [in/year] =1 in/year ≈ 3.1688 x 10-8 in/s ≈ 8.0488 x 10-10 m/s
1 Foot per second [ft/s] =1 ft/s = 12 in/s = 0.3048 m/s ≈ 0.68182 mph [more... ]
1 Foot per hour [ft/h] =1 ft/h ≈ 2.77778 x 10-4 ft/s ≈ 8.46667 x 10-5 m/s
1 Foot per day [ft/day] =1 ft/day ≈ 1.15741 x 10-5 ft/s ≈ 3.52778 x 10-6 m/s
1 Foot per year [ft/year] =1 ft/year ≈ 3.1688 x 10-8 ft/s ≈ 9.65853 x 10-9 m/s
1 Yard per second [yd/s] =1 yd/s = 3 ft/s = 0.9144 m/s ≈ 2.04545 mph
1 Yard per hour [yd/h] =1 yd/h ≈ 2.77778 x 10-4 yd/s ≈ 2.54 x 10-4 m/s
1 Yard per day [yd/day] =1 yd/day ≈ 1.15741 x 10-5 yd/s ≈ 1.05833 x 10-6 m/s
1 Yard per year [yd/year] =1 yd/year ≈ 3.1688 x 10-8 yd/s ≈ 2.89756 x 10-8 m/s
1 Mile per second [mi/s] =1 mi/s = 1609.344 m/s = 5 793 638.4 mph
1 Mile per hour [mph] =1 mph = 1.609344 km/h = 0.44704 m/s ≈ 1.46667 ft/s [more... ]
1 Mile per day [mi/day] =1 mi/day ≈ 0.0186267 m/s ≈ 0.73333 in/s
1 Mile per year [mi/year] =1 mi/year ≈ 5.09970 x 10-5 m/s ≈ 7.2279 in/h
1 Knot (naut. miles per hour) [kn] =1 kn = 1.852 km/h ≈ 1.15078 mph ≈ 0.51444 m/s [more... ]
Empeirical1 Mach (sea level, 20° C ) [M] =Mach number = the speed of an object relative to the speed of sound in the fluid around it. In standard atmosphere, at sea level, at 20° C, M is equal to 343.2 m/s or 1126 ft/s. [more... ]
Astronomical1 Natural speed unit [c] =1 natural speed unit = the speed of light in vacuum = 299792458 m/s [more... ]
1 Astronomical unit per sec [au/s] =1 au/s = 149 597 870.7 km/s ≈ 92955807 mi/s [more... ]
1 Astronomical unit per hour [au/h] =1 au/h ≈ 41555 km/s ≈ 92955807 mi/s [more... ]
1 Astronomical unit per day [au/day] =1 au/D ≈ 1731.5 km/s ≈ 1075.9 mi/s. Day is defined as 86400 seconds. [more... ]
1 Astronomical unit per year [au/year] =4 au/s = 149 597 870.7 km/s ≈ 92955807 mi/s. Year is defined as 365.25 days. [more... ]
See also
Mph-kmph converter
Area converter
Volume converter
Length converter
All Unit Converters