This calculator helps you estimate the distance travelled after a certain time of constant speed. It also converts to alternative speed units: mile/hr, km/h, m/s, mach, ...
Most countries use the Metric System, which uses the measuring units such as meters and grams and adds prefixes like kilo, milli and centi to count orders of magnitude.
38.6 m/s
3.86 * 101 m/s (scientific)
38.6 m/s (engineering)
In the USA and UK, the older Imperial system is used, where things are measured in feet, inches and pounds.
138 967 m/hr
127 ft/sec
3 600 secs
1.0 hrs
3.6 * 103 sec(s)
60 min(s)
1 hr(s)
138 967 meter
5.47 * 106 in
455.93 * 103 ft
151.98 * 103 yard
138.97 * 103 m
138.97 km
86.35 mile
75.04 nautical mile