Escape Velocity
v_esc = √(2GM/R) from mass and radius.
Inputs
Results
m/s
11,186
km/s11.186
How to Use This Calculator
- Enter the body's mass in kg (Earth = 5.972e24 kg, Moon = 7.342e22 kg).
- Enter the body's radius in m (Earth = 6.371e6 m).
- Review escape velocity in m/s and km/s.
- Compare to Earth's escape velocity (11.2 km/s) to understand relative gravity of other bodies.
- Note: Escape velocity ignores atmospheric drag -- actual launch energy requirements are higher.
How the result changes with Radius (m)
| Radius (m) | m/s |
|---|---|
| 100,000,001 | 2,823.4 |
| 350,000,001 | 1,509.2 |
| 650,000,000 | 1,107.4 |
| 900,000,000 | 941.1 |
What each input means
- Mass (kg)
- Earth ~5.972e24.
- Radius (m)
- Earth ~6.371e6.
How this is calculated
Formula
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