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Escape Velocity Calculator

Use this online escape velocity calculator with labeled inputs and a worked example. vesc = √(2GM/r).

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planet escape speed calculator online

Use escape velocity calculator online with the physical quantities shown below. Ideal isolated spherical body; neglects atmosphere and rotation.

How to use it

Enter Central body mass (kg). Set Distance from center (m). Select Calculate, check the result units, then copy or download the JSON result.

Options and example settings

OptionChoices / valueExample default
Central body mass (kg)Main input. Decimal or scientific notation. Positive values only. 5.972e+24
Distance from center (m)Option. Decimal or scientific notation. Positive values only. 6371000

Calculation method

vesc = √(2GM/r)

Worked examples

Worked case for escape velocity calculator. Ideal isolated spherical body; neglects atmosphere and rotation.

Escape Velocity Calculator — example with explicit inputs

Settings: Distance from center (m): 6371000

Input:

5.972e+24

Expected result for the example input and options:

Output:

{
  "escape_velocity_m_s": 11185.97789184991
}

Limitations and common mistakes

  • Ideal isolated spherical body; neglects atmosphere and rotation.
  • Match every input to its displayed unit; scientific notation such as 1e-6 is accepted.
  • This is the documented idealized model; real systems may require additional effects and measurement uncertainty.

Frequently asked questions

How can I use planet escape speed calculator online?

Enter Central body mass (kg). Set Distance from center (m). Select Calculate, check the result units, then copy or download the JSON result.

Which model does Escape Velocity Calculator use?

vesc = √(2GM/r). Ideal isolated spherical body; neglects atmosphere and rotation.

Technical references

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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