Interplanetary Travel

Terms
  • G (standard gravity)
    • 9.806 m/s2
  • Meters per Second (mps)
    Meters per second is a unit of both speed (scalar) and velocity (vector quantity which specifies both magnitude and a specific direction), defined by distance in meters divided by time in seconds.
    • 1 mps is 3.6 kph
  • Kilometers per Second (kps)
  • Kilometers per Hour (kph)
    The kilometer per hour is a unit of speed, expressing the number of kilometers traveled in one hour.
Travel chart
Percent of light speed kps mps kph Time @ constant 1G Time Dilation
100 299,793 km/s 299,792,458 m/s 1,079,252,850 kph NA
99 296,794.5 km/s 296,794,533.42 m/s 1,068,460,000 kph 2483.3 days (6.8 yrs)
90 269,813 km/s 269,813,212 m/s 971,327,564 kph 730.6 days (2 yrs)
80 239,834 km/s 239,833,966 m/s 863,402,279 kph 471.8 days
70 209,858 km/s 209,854,721 m/s 755,476,994 kph 346.8 days
60 179,876 km/s 179,875,475 m/s 647,551,709 kph 265.4 days
50 149,896 km/s 149,896,229 m/s 539,626,424 kph 204.3 days
40 119,917 km/s 119,916,983 m/s 431,701,140 kph 154.4 days
30 89,938 km/s 89,937,737.4 m/s 323,775,855 kph 111.3 days
20 59,958.5 km/s 59,958,491.6 m/s 215,850,570 kph 72.2 days
10 29,979.25 km/s 29,979,245.8 m/s 107,925,285 kph 35.6 days
1 2,998 km/s 2,997,924.58 m/s 10,792,529 kph 3.5 days neg

Interplanetary Travel

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