How it is calculated
1 km/h = 1/3,6 m/s. A knot is one nautical mile per hour, about 0,514 m/s. A mile per hour is 0,44704 m/s.
Result = value × factor of the source unit / factor of the target unit
Where the numbers come from
- Value
- Source unit
Example
90 km/h = 25 m/s.
Questions
How do I turn km/h into m/s in my head?
Divide by 3,6. Or, roughly, divide by 4 and add a tenth, if there is no calculator to hand.
Is a knot a nautical unit?
Yes. It is tied to the nautical mile, not the statute mile.
Are km/s included?
Yes, on a line of its own. For an ordinary car the number there is very small.