This speed converter uses standard conversion factors between meters per second and other common speed units. One meter per second equals exactly 3.6 kilometers per hour, approximately 2.23694 miles per hour, 1.94384 knots, and 3.28084 feet per second.
Conversion Formulas
km/h = m/s × 3.6
Multiply m/s by 3.6 to get km/h
mph = m/s × 2.23694
Multiply m/s by 2.23694 to get mph
knots = m/s × 1.94384
Multiply m/s by 1.94384 to get knots
ft/s = m/s × 3.28084
Multiply m/s by 3.28084 to get ft/s
Where These Conversions Are Used
Meters per second is the SI unit for speed, widely used in physics, engineering, and scientific applications. Converting to km/h helps relate to everyday driving speeds (e.g., 30 m/s = 108 km/h). MPH is common in the US and UK, knots are standard in aviation and maritime contexts, and ft/s is used in some engineering fields. This converter makes it easy to switch between any of these units.
Frequently Asked Questions
How do I convert m/s to km/h manually?
To convert meters per second to kilometers per hour, multiply by 3.6. For example: 10 m/s × 3.6 = 36 km/h. The factor 3.6 comes from 1 m/s = (1/1000 km) / (1/3600 h) = 3.6 km/h.
What is the formula to convert km/h to m/s?
To convert kilometers per hour back to meters per second, divide by 3.6. For example: 100 km/h ÷ 3.6 ≈ 27.78 m/s.
Why is 3.6 the conversion factor between m/s and km/h?
One kilometer is 1000 meters and one hour is 3600 seconds. So 1 m/s = (1/1000) km / (1/3600) h = 3600/1000 = 3.6 km/h. This is a direct consequence of the definitions of the units.
When would I use knots vs m/s?
Knots (nautical miles per hour) are used primarily in aviation, maritime navigation, and meteorology for wind speeds over water. m/s is the standard SI unit for all scientific and engineering contexts. Weather reports for wind may use either, depending on the region and context.
What's a quick way to estimate m/s to mph?
For a rough mental estimate, multiply m/s by 2.2 to get mph (since the exact factor is 2.23694). For example, 10 m/s ≈ 22 mph. This is close enough for most everyday situations. For km/h, just multiply m/s by 3.6.