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.
20.0 m/s
2 * 101 m/s (scientific)
20 m/s (engineering)
In the USA and UK, the older Imperial system is used, where things are measured in feet, inches and pounds.
72 000 m/hr
65.6 ft/sec
1.00 secs
1 sec
1 sec(s)
20.0 meter
20 * 103 mm
2 * 103 cm
787.4 in
65.62 ft
21.87 yard
20 m
20 * 10-3 km
12.43 * 10-3 mile
10.8 * 10-3 nautical mile