🚀Escape Velocity Calculator
Calculate the escape velocity from any planet, moon, or star. Compare Earth, Moon, Mars, Jupiter, the Sun, and custom bodies.
Calculate escape velocity (palayan veg) from Earth, Moon, Mars, Jupiter, or any custom body. Shows km/s, mph, and % of light speed. Free.
How to Use Escape Velocity Calculator — Step by Step
- 1Select a preset body (Earth, Moon, Mars, Jupiter, Sun, etc.) or choose 'Custom'
- 2For custom bodies, enter mass in kg and radius in km
- 3Click 'Calculate Escape Velocity'
- 4View the escape velocity in km/s and mph
- 5See how it compares to Earth and the Schwarzschild radius
Why Use ToolNest for Escape Velocity Calculator?
- 🚀Escape velocity formula: v = √(2GM/R) — exact Newtonian gravity
- 🌍Presets for 9 bodies: Earth, Moon, Mars, Jupiter, Saturn, Sun, Mercury, Venus, and Neutron Star
- ✏️Custom mode: enter any mass (kg) and radius (km)
- 💡Shows % of speed of light and Schwarzschild radius side-by-side
- 🆓100% browser-based — no server needed, works offline
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Frequently Asked Questions
What is escape velocity?
Escape velocity is the minimum speed an object needs to escape a body's gravitational field without further propulsion. Earth's escape velocity is 11.186 km/s (about 25,000 mph). The formula is v = √(2GM/R).
Does escape velocity depend on direction?
No — escape velocity is the same in all directions. However, launching toward the east takes advantage of Earth's rotation (adds about 0.46 km/s) reducing the fuel needed.
Can anything escape a black hole?
At and inside the event horizon (Schwarzschild radius), the escape velocity equals or exceeds the speed of light. Since nothing can travel faster than light, nothing — not even light — can escape. This is what makes a black hole black.
What is Earth's escape velocity?
Earth's escape velocity is 11.186 km/s (about 40,270 km/h or 25,020 mph). The Moon's is only 2.38 km/s, which is why lunar rockets are much smaller than Earth-to-orbit rockets.