# Velocity calculator: `Porsche 911 Turbo top speed: 317 km/hr`

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, ...

### Speed

##### METRIC (DECIMAL)

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.

• Speed = `88.0 m/s`
• Speed = `8.8 * 101 m/s (scientific)`
• Speed = `88.05 m/s (engineering)`
• ##### IMPERIAL

In the USA and UK, the older Imperial system is used, where things are measured in feet, inches and pounds.

• Speed = `316 973 m/hr`
• Speed = `289 ft/sec`
• ### Time

• Time = `86 400 secs` = `1.0 day`
• = `86.4 * 103 sec(s)`
• = `1.44 * 103 min(s)`
• = `24 hr(s)`
• = `1 day(s)`
• ### Speed x Time = Distance

• Distance = `7 607 350 meter`
• = `8.32 * 106 yard`
• = `7.61 * 106 m`
• = `7.61 * 103 km`
• = `4.73 * 103 mile`
• = `4.11 * 103 nautical mile`

### References

• Astronomy: light-year - parsec