Convert Earth Escape Velocity to Miles per Second
Convert Earth Escape Velocity (v_esc) to Miles per Second (mi/s) instantly and accurately.
Conversion Formula
mi/s = v_esc × 6.950658156
About Earth Escape Velocity
Earth's escape velocity = 11,186 m/s at the surface - v_esc = √(2GM/r). A spacecraft launched at this speed (any direction) escapes on a parabolic trajectory; less gives an elliptical orbit. Apollo's trans-lunar injection exceeded this to reach the Moon. Voyager, Pioneer, and New Horizons all exceeded 11.2 km/s at launch. Moon escape velocity 2.38 km/s; Mars 5.03 km/s; Jupiter 59.5 km/s. 1 Earth v_esc ≈ 11,186 m/s = 40,270 km/h.
About Miles per Second
A mile per second (mi/s) = exactly 1,609.344 m/s - above the fastest air-breathing aircraft. NASA X-43A scramjet: 2.9 km/s ≈ 1.8 mi/s (Mach 9.6). Earth's orbital speed around the Sun: ~18.5 mi/s (29.8 km/s). Light travels ~186,282 mi/s in vacuum - the classic imperial figure still used in popular astronomy. Tunguska impactor entered Earth's atmosphere at ~9-11 mi/s. 1 mi/s = 3,600 mph = 3,128.3 kn.
Quick Reference Table
| Earth Escape Velocity (v_esc) | Miles per Second (mi/s) |
|---|---|
| 1 v_esc | 6.95066 mi/s |
| 2 v_esc | 13.9013 mi/s |
| 5 v_esc | 34.7533 mi/s |
| 10 v_esc | 69.5066 mi/s |
| 25 v_esc | 173.766 mi/s |
| 50 v_esc | 347.533 mi/s |
| 100 v_esc | 695.066 mi/s |