Escape Velocity: Minimum speed to break free of a body’s gravity. This free calculator solves for Escape speed, mass, radius and shows every step.
Escape velocity is the minimum speed at which an object can leave a body's gravity and never fall back, with no further propulsion. It depends only on the body's mass and radius — not on the escaping object's mass. Earth's is about 11.2 km/s.
Earth: M = 5.97 × 10²⁴ kg, r = 6.37 × 10⁶ m. v = √(2·6.674e−11·5.97e24 / 6.37e6) ≈ 11,180 m/s (11.2 km/s).
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Escape Velocity uses the formula v_esc = √(2·G·M / r). Minimum speed to break free of a body’s gravity.
Choose which variable to solve for, enter the values you know (in any supported unit), and the calculator substitutes them into v_esc = √(2·G·M / r) and shows every step of the working. It can solve for Escape speed, mass, radius.
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