Miles per Hour to First Cosmic Velocity (mph → v1)
Formula
1 mph = 0.0000565873417721519 v1Conversion Table
| mph | v1 |
|---|---|
| 0 | 0 |
| 1.0000 | 0.000056587 |
| 2.0000 | 0.00011317 |
| 3.0000 | 0.00016976 |
| 4.0000 | 0.00022635 |
| 5.0000 | 0.00028294 |
| 6.0000 | 0.00033952 |
| 7.0000 | 0.00039611 |
| 8.0000 | 0.00045270 |
| 9.0000 | 0.00050929 |
| 10.000 | 0.00056587 |
| 11.000 | 0.00062246 |
| 12.000 | 0.00067905 |
| 13.000 | 0.00073564 |
| 14.000 | 0.00079222 |
| 15.000 | 0.00084881 |
| 16.000 | 0.00090540 |
| 17.000 | 0.00096198 |
| 18.000 | 0.0010186 |
| 19.000 | 0.0010752 |
| mph | v1 |
|---|---|
| 20.000 | 0.0011317 |
| 21.000 | 0.0011883 |
| 22.000 | 0.0012449 |
| 23.000 | 0.0013015 |
| 24.000 | 0.0013581 |
| 25.000 | 0.0014147 |
| 26.000 | 0.0014713 |
| 27.000 | 0.0015279 |
| 28.000 | 0.0015844 |
| 29.000 | 0.0016410 |
| 30.000 | 0.0016976 |
| 31.000 | 0.0017542 |
| 32.000 | 0.0018108 |
| 33.000 | 0.0018674 |
| 34.000 | 0.0019240 |
| 35.000 | 0.0019806 |
| 36.000 | 0.0020371 |
| 37.000 | 0.0020937 |
| 38.000 | 0.0021503 |
| 39.000 | 0.0022069 |
| mph | v1 |
|---|---|
| 40.000 | 0.0022635 |
| 41.000 | 0.0023201 |
| 42.000 | 0.0023767 |
| 43.000 | 0.0024333 |
| 44.000 | 0.0024898 |
| 45.000 | 0.0025464 |
| 46.000 | 0.0026030 |
| 47.000 | 0.0026596 |
| 48.000 | 0.0027162 |
| 49.000 | 0.0027728 |
| 50.000 | 0.0028294 |
| 51.000 | 0.0028860 |
| 52.000 | 0.0029425 |
| 53.000 | 0.0029991 |
| 54.000 | 0.0030557 |
| 55.000 | 0.0031123 |
| 56.000 | 0.0031689 |
| 57.000 | 0.0032255 |
| 58.000 | 0.0032821 |
| 59.000 | 0.0033387 |
| mph | v1 |
|---|---|
| 60.000 | 0.0033952 |
| 61.000 | 0.0034518 |
| 62.000 | 0.0035084 |
| 63.000 | 0.0035650 |
| 64.000 | 0.0036216 |
| 65.000 | 0.0036782 |
| 66.000 | 0.0037348 |
| 67.000 | 0.0037914 |
| 68.000 | 0.0038479 |
| 69.000 | 0.0039045 |
| 70.000 | 0.0039611 |
| 71.000 | 0.0040177 |
| 72.000 | 0.0040743 |
| 73.000 | 0.0041309 |
| 74.000 | 0.0041875 |
| 75.000 | 0.0042441 |
| 76.000 | 0.0043006 |
| 77.000 | 0.0043572 |
| 78.000 | 0.0044138 |
| 79.000 | 0.0044704 |
Miles per Hour to First Cosmic Velocity Conversion
Converting Miles per Hour (mph) to First Cosmic Velocity (v1) is a common speed conversion. 1 mph equals 0.000057 v1. For example, 100 mph is equal to 0.005659 v1.
Quick Reference Values
1 mph = 0.000057 v1. 5 mph = 0.000283 v1. 10 mph = 0.000566 v1. 25 mph = 0.001415 v1. 50 mph = 0.002829 v1. 100 mph = 0.005659 v1.
What is Miles per Hour?
Miles per Hour (mph) is a unit of speed. Miles per hour measure speed as miles traveled in one hour. One mile equals 1,609.344 meters, so 1 mph equals approximately 0.44704 meters per second [bipm-si-brochure]. This unit is widely used for vehicle speed and speed limits in non-metric countries. Miles per hour originated from the mile and hour units standardized in the British Imperial system. It became common in transportation with the rise of automobiles and was internationally recognized with the mile's 1959 definition [bipm-si-brochure]. The USA, United Kingdom, and several Commonwealth nations use mph for road speed limits and vehicle speeds. It remains standard in aviation and motorsports within these countries, despite metrication efforts [nist-sp-811].
What is First Cosmic Velocity?
First Cosmic Velocity (v1) is a unit of speed. The first cosmic velocity is the minimum orbital speed required for an object to maintain a stable circular orbit just above a planet's surface, approximately 7.9 km/s for Earth. It is derived from Newtonian mechanics and gravitational parameters, calculated by √(GM/R) where G is the gravitational constant, M the planet mass, and R its radius [nist-cuu]. The concept of cosmic velocities was formulated by Russian scientist Konstantin Tsiolkovsky in the early 20th century when studying orbital mechanics. It formalized escape and orbital speeds as fundamental limits for spacecraft [nist-cuu]. This velocity is critical in aerospace engineering and space mission design globally, used by space agencies such as NASA, ESA, and Roscosmos. It serves as a baseline for launching satellites into low Earth orbit [nist-cuu].
Common Misspellings
People often search for this conversion using these alternate spellings: miles per hour, mile per hour, mi/h, mphs, first cosmic velocity, cosmic velocity 1st, cosmic velocity one, orbital velocity first, cosmic velocity 1. All of these refer to the Miles per Hour to First Cosmic Velocity conversion.