Speed Converter
Speed Conversion Calculators
Explore our comprehensive collection of conversion calculators for various units of speed. Simply choose one from the options below:
- Most Popular:
1. mph to km/h converter
2. km/h to mph converter
3. ft/s to mph converter
4. mph to m/s converter
Speed Units
Speed is a measure of how fast an object is moving. It can be represented in various units, including:
- Knot converters
- Mach converters
- Speed of sound converters
- Speed of light converters
- Mile per hour converters
- Foot per second converters
- Kilometer per second converters
- Kilometer per hour converters
- Meter per second converters
- Centimeter per second converters
What is Speed?
Speed is the measure of how quickly an object moves or the rate at which it covers a distance. It is calculated by dividing the distance traveled by the time taken to cover that distance:
speed = distance / time.(alert-success)
Commonly, speed over land is measured in miles per hour (mph) or kilometers per hour (km/h), while speed over sea is measured in knots. The speed of sound is approximately equal to 767.27 miles per hour or 1,235 kilometers per hour.
Speed Unit Conversion Table
Here's an overview of equivalent speed measurements in both metric and imperial units.
| Convert From | Knot | Mach | Speed Of Sound | Speed Of Light | Mile Per Hour | Foot Per Second | Kilometer Per Second | Kilometer Per Hour | Meter Per Second | Centimeter Per Second |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 knot = | 1 kn | Mach 0.0015 | 0.0015 sound | 0.000000001716 c | 1.150779 mph | 1.68781 ft/s | 0.000514 km/s | 1.852 km/h | 0.514444 m/s | 51.444444 cm/s |
| Mach 1 = | 666.738661 kn | Mach 1 | 1 sound | 0.0000011441 c | 767.269148 mph | 1,125 ft/s | 0.343 km/s | 1,235 km/h | 343 m/s | 34,300 cm/s |
| speed of sound = | 666.738661 kn | Mach 1 | 1 sound | 0.0000011441 c | 767.269148 mph | 1,125 ft/s | 0.343 km/s | 1,235 km/h | 343 m/s | 34,300 cm/s |
| speed of light = | 582,749,918 kn | Mach 874,030 | 874,030 sound | 1 c | 670,616,629 mph | 983,571,056 ft/s | 299,792 km/s | 1,079,252,849 km/h | 299,792,458 m/s | 29,979,245,800 cm/s |
| 1 mile per hour = | 0.868976 kn | Mach 0.001303 | 0.001303 sound | 0.0000000014912 c | 1 mph | 1.466667 ft/s | 0.000447 km/s | 1.609344 km/h | 0.44704 m/s | 44.704 cm/s |
| 1 foot per second = | 0.592484 kn | Mach 0.000889 | 0.000889 sound | 0.0000000010167 c | 0.681818 mph | 1 ft/s | 0.000305 km/s | 1.09728 km/h | 0.3048 m/s | 30.48 cm/s |
| 1 kilometer per second = | 1,944 kn | Mach 2.915452 | 2.915452 sound | 0.0000033356 c | 2,237 mph | 3,281 ft/s | 1 km/s | 3,600 km/h | 1,000 m/s | 100,000 cm/s |
| 1 kilometer per hour = | 0.539957 kn | Mach 0.00081 | 0.00081 sound | 0.00000000092657 c | 0.621371 mph | 0.911344 ft/s | 0.000278 km/s | 1 km/h | 0.277778 m/s | 27.777778 cm/s |
| 1 meter per second = | 1.943844 kn | Mach 0.002915 | 0.002915 sound | 0.0000000033356 c | 2.236936 mph | 3.28084 ft/s | 0.001 km/s | 3.6 km/h | 1 m/s | 100 cm/s |
| 1 centimeter per second = | 0.019438 kn | Mach 0.000029155 | 0.000029155 sound | 0.000000000033356 c | 0.022369 mph | 0.032808 ft/s | 0.00001 km/s | 0.036 km/h | 0.01 m/s | 1 cm/s |
