Escape Velocity Calculator
Escape Velocity
v = √(2GM/r)
What is the Escape Velocity Calculator?
Escape Velocity Calculator calculate escape velocity: v = √(2gm/r). It is part of Home of Calculators's Astronomy Calculators suite for orbital mechanics, stellar properties, and cosmological calculations. The calculator is designed for astronomers, students, space enthusiasts, but anyone can use it. No signup, no ads, no tracking. Just accurate math, computed locally in your browser using a BigNumber-precision math engine.
Escape velocity is the minimum speed needed for an object to escape from the gravitational influence of a massive body without further propulsion. It depends on the body's mass (M) and radius (r), and the gravitational constant G.
GGravitational constant (6.674×10⁻¹¹ N·m²/kg²)MBody mass (kg)rDistance from center (m)How to use the Escape Velocity Calculator
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Identify the body
Determine the mass M and radius r of the planet or star.
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Calculate 2GM
Multiply 2 × G × M where G = 6.674×10⁻¹¹.
- 3
Divide by r
Divide the result by the radius r in meters.
- 4
Take the square root
The square root gives the escape velocity in m/s.
Quick tips
- All calculations run locally in your browser; your data never leaves your device.
- For best results on mobile, rotate to landscape when entering many values.
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Why Home of Calculators
- 100% private (calculations run in your browser)
- 128-bit BigNumber precision (no rounding errors)
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Frequently asked questions
Is the Escape Vel accurate?
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Yes. Home of Calculators uses a BigNumber-precision math engine (64-128 decimal digits) to ensure calculations are accurate. We run 96+ automated tests covering unit conversion, financial formulas, health formulas, and more. For critical decisions (financial, medical, legal), we still recommend consulting a qualified professional.
Is the Escape Velocity Calculator free?
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Yes. Every calculator on Home of Calculators is 100% free, with no signup, no ads, and no hidden fees. The entire platform is free forever.
Do you store the values I enter?
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No. All calculations happen in your browser. We never see, store, or transmit your inputs to any server. Your data stays on your device.
Can I use the Escape Vel on my phone?
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Yes. Home of Calculators is fully responsive and works on any device (phone, tablet, laptop, or desktop). The interface adapts to your screen size.
Can I embed this calculator on my own website?
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Yes. Click the "Share" button to get an iframe embed code. The embedded calculator will look like any other Home of Calculators widget. You can also build a fully customized version using our visual builder.
Can I build my own custom calculator?
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Absolutely. Home of Calculators's visual builder lets you add fields, write formulas, choose a theme, and brand the result with your own logo, all without writing code.