Porsche 911 Turbo top speed: 317 km/hr
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.
88.1 m/s
8.81 * 101 m/s (scientific)
88.06 m/s (engineering)
In the USA and UK, the older Imperial system is used, where things are measured in feet, inches and pounds.
317,000 m/hr
289 ft/sec
3,600 secs
1.0 hrs
3.6 * 103 sec(s)
60 min(s)
1 hr(s)
317,000 meter
1.04 * 106 ft
346.68 * 103 yard
317 * 103 m
317 km
196.98 mile
171.17 nautical mile