Mile Per Second (mi/s)
Exactly 1,609.344 m/s. Used for very high speeds.
1 mile per second = 1,609.344 meters per second (exactly).
About the mile per second
Spaceflight speeds are where mile per second appears. Escape velocity from Earth's surface is 11.186 km/s, which is about 6.95 mi/s, found by dividing 11,186 m/s by 1,609.344 m. From the Moon the figure is 2.38 km/s, or about 1.48 mi/s, and a low Earth orbit at 7.7 km/s is about 4.8 mi/s, about 69 percent of the Earth escape figure.
The international mile is exactly 1,609.344 m, so one mile per second is exactly that many meters per second, and NIST lists the conversion as exact. It is also 5,793.6 km/h, and one meter per second is therefore about 0.00062 mi/s. NIST cautions that mile per second is not among the units it generally uses in its own publications.
Sources: Wikipedia: Escape velocity; NIST SP 811 Appendix B.8: conversion factors; Wikipedia: Orders of magnitude (speed)
Mile Per Second conversion chart
1 mile per second expressed in every other speed unit:
| Unit | 1 mile per second |
|---|---|
| Meters Per Second | 1,609.344 |
| Kilometers Per Hour | 5,793.6384 |
| Miles Per Hour | 3,600 |
| Knots | 3,128.314471 |
| Feet Per Second | 5,280 |
| Mach | 4.729275274 |
| Speed Of Light | 0.000005368193752 |
| Centimeters Per Second | 160,934.4 |
| Millimeters Per Second | 1,609,344 |
| Kilometers Per Second | 1.609344 |
| Kilometers Per Minute | 96.56064 |
| Meters Per Minute | 96,560.64 |
| Inches Per Second | 63,360 |
| Feet Per Minute | 316,800 |
| Furlongs Per Fortnight | 9,676,800 |
More US & Imperial units
- mile per hour (speed)
- foot per second (speed)
- inch per second (speed)
- foot per minute (speed)
- inch (length)
- foot (length)
- yard (length)
- mile (length)
- thou (length)
- league (length)
- furlong (length)
- chain (length)
- rod (length)
- link (length)
- hand (length)
- pound (weight & mass)
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