Speed Converter – Convert Between Speed Units
Speed Unit Converter
Speed is defined as the rate at which an object covers distance. Different industries and countries use different speed units — road speed in India and Europe is measured in km/h, while the US uses mph. Aviation and maritime navigation use knots, and physics typically uses m/s. This converter handles all five major speed units instantly.
Common Speed Conversions
| From | m/s | km/h | mph |
|---|---|---|---|
| 1 m/s | 1 | 3.6 | 2.237 |
| 1 km/h | 0.2778 | 1 | 0.6214 |
| 1 mph | 0.447 | 1.609 | 1 |
| 1 knot | 0.5144 | 1.852 | 1.151 |
| 1 ft/s | 0.3048 | 1.0973 | 0.6818 |
Frequently Asked Questions
How do I convert km/h to mph?
To convert km/h to mph, multiply by 0.621371. For example, 100 km/h = 62.14 mph. This is useful when comparing Indian or European speed limits with US limits.
What is 1 knot in km/h?
1 knot equals approximately 1.852 km/h. Knots are the standard unit of speed in aviation and maritime navigation, representing one nautical mile per hour.
How fast is 100 mph in km/h?
100 mph equals approximately 160.93 km/h. Highway speed limits in India are typically 100–120 km/h, which is about 62–75 mph.
What is the difference between m/s and km/h?
Metres per second (m/s) is the SI base unit of speed, used in scientific contexts. Kilometres per hour (km/h) is more common in everyday life. 1 m/s = 3.6 km/h.
Why do pilots and sailors use knots instead of km/h or mph?
Knots are based on nautical miles, which are directly tied to degrees of latitude on the Earth's surface. This makes navigation calculations simpler for aviation and maritime use.
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