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Speed & Velocity Converter
Convert between kilometers per hour, miles per hour, meters per second, knots, Mach (sound), and speed of light.
Popular Speed & Velocity Conversions
Kilometers per Hour to Miles per Hour โ Miles per Hour to Kilometers per Hour โ Meters per Second to Kilometers per Hour โ Knots to Miles per Hour โ Kilometers per Hour to Knots โ Feet per Second to Miles per Hour โ Mach to Kilometers per Hour โ Mach to Miles per Hour โ Kilometers per Second to km/h โ Speed of Light to km/s โ
Complete Unit Reference & Conversion Ratios
Speed & Velocity Reference & Conversion Factors
Base reference unit: Meters per Second (m/s)
| Unit Name | Symbol | Classification | Value in Meters per Second | Description |
|---|---|---|---|---|
| Kilometers per Second | km/s | ๐น Metric / SI Speed | 1 km/s = 1,000 m/s | 1 km/s = 1,000 m/s = 3,600 km/h |
| Kilometers per Minute | km/min | ๐น Metric / SI Speed | 1 km/min = 16.66666667 m/s | 1 km/min = 60 km/h โ 16.67 m/s |
| Kilometers per Hour | km/h | ๐น Metric / SI Speed | 1 km/h = 0.27777778 m/s | 1 km/h โ 0.278 m/s โ 0.621 mph |
| Meters per Second | m/s | ๐น Metric / SI Speed | 1 m/s = 1 m/s | SI base unit of speed & velocity |
| Meters per Minute | m/min | ๐น Metric / SI Speed | 1 m/min = 0.01666667 m/s | 1 m/min = 60 m/h = 1/60 m/s |
| Meters per Hour | m/h | ๐น Metric / SI Speed | 1 m/h = 0.00027778 m/s | 1 m/h = 0.001 km/h |
| Centimeters per Second | cm/s | ๐น Metric / SI Speed | 1 cm/s = 0.01 m/s | 1 cm/s = 0.01 m/s = 0.036 km/h |
| Centimeters per Minute | cm/min | ๐น Metric / SI Speed | 1 cm/min = 0.00016667 m/s | 1 cm/min = 0.6 m/h |
| Centimeters per Hour | cm/h | ๐น Metric / SI Speed | 1 cm/h = 0.00000278 m/s | 1 cm/h = 0.01 m/h |
| Millimeters per Second | mm/s | ๐น Metric / SI Speed | 1 mm/s = 0.001 m/s | 1 mm/s = 0.001 m/s |
| Micrometers per Second | ยตm/s | ๐น Metric / SI Speed | 1 ยตm/s = 0.000001 m/s | 1 micron/s = 10โปโถ m/s |
| Nanometers per Second | nm/s | ๐น Metric / SI Speed | 1 nm/s = 1.0000e-9 m/s | 1 nm/s = 10โปโน m/s |
| Miles per Second | mi/s | ๐๏ธ Imperial & US Customary | 1 mi/s = 1,609.344 m/s | 1 mi/s = 3,600 mph = 1,609.34 m/s |
| Miles per Minute | mi/min | ๐๏ธ Imperial & US Customary | 1 mi/min = 26.8224 m/s | 1 mi/min = 60 mph = 26.82 m/s |
| Miles per Hour | mph | ๐๏ธ Imperial & US Customary | 1 mph = 0.44704 m/s | 1 statute mph = 1.609344 km/h = 0.44704 m/s |
| Feet per Second | ft/s | ๐๏ธ Imperial & US Customary | 1 ft/s = 0.3048 m/s | 1 ft/s = 0.3048 m/s โ 0.6818 mph |
| Feet per Minute | ft/min | ๐๏ธ Imperial & US Customary | 1 ft/min = 0.00508 m/s | 1 ft/min = 60 ft/h = 0.00508 m/s |
| Feet per Hour | ft/h | ๐๏ธ Imperial & US Customary | 1 ft/h = 0.00008467 m/s | 1 ft/h = 1/5280 mph |
| Yards per Second | yd/s | ๐๏ธ Imperial & US Customary | 1 yd/s = 0.9144 m/s | 1 yd/s = 3 ft/s = 0.9144 m/s |
| Yards per Minute | yd/min | ๐๏ธ Imperial & US Customary | 1 yd/min = 0.01524 m/s | 1 yd/min = 60 yd/h = 0.01524 m/s |
| Yards per Hour | yd/h | ๐๏ธ Imperial & US Customary | 1 yd/h = 0.000254 m/s | 1 yd/h = 3 ft/h = 0.000254 m/s |
| Knots (Nautical Miles/hr) | kn | โ Nautical & Aviation | 1 kn = 0.51444444 m/s | 1 knot = 1 nautical mile per hour = exactly 1.852 km/h โ 1.151 mph |
| Nautical Miles per Hour | nmi/h | โ Nautical & Aviation | 1 nmi/h = 0.51444444 m/s | Equivalent to 1 international knot = 1.852 km/h |
| Nautical Miles per Minute | nmi/min | โ Nautical & Aviation | 1 nmi/min = 30.86666667 m/s | 1 nmi/min = 60 knots = 111.12 km/h |
| Nautical Miles per Second | nmi/s | โ Nautical & Aviation | 1 nmi/s = 1,852 m/s | 1 nmi/s = 1,852 m/s |
| Mach (Sound in Air at 15ยฐC STP) | Ma | โก Supersonic & Physics | 1 Ma = 340.29 m/s | Speed of sound in dry air at sea level 15ยฐC (1 atm) = 340.29 m/s = 1,225 km/h |
| Speed of Sound in Water (20ยฐC) | sound (HโO) | โก Supersonic & Physics | 1 sound (HโO) = 1,480 m/s | Speed of sound in freshwater at 20ยฐC โ 1,480 m/s |
| Earth Orbital Velocity (Mean) | v (Earth) | โก Supersonic & Physics | 1 v (Earth) = 29,780 m/s | Mean orbital speed of Earth around the Sun โ 29.78 km/s |
| Speed of Light in Vacuum (c) | c | โก Supersonic & Physics | 1 c = 299,792,458 m/s | Exact universal physical constant = 299,792,458 m/s |