What you provide
What you provide
- Central-body mass expressed in kg, using the same scenario as the other inputs
- Launch radius from center expressed in m, using the same scenario as the other inputs
PHYSICS / GRAVITATION
Escape Velocity Calculator
Calculate ideal escape speed from a spherical body's gravitational field. Inspect the SI equation, substituted inputs, derived result, and physical limitations in one guided workspace.
- 01 Calculated in this tab
- 02 Values stay in this browser tab
- 03 Use boundary
Use boundary
Calculation path
Calculate ideal escape speed from a spherical body's gravitational field. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.
Calculation path
v_e=sqrt(2GM/r)
What you receive
What you receive
- Escape speed in m/s from the stated equation
- A symbolic formula plus substituted working with your values
- Visible assumptions, field guidance, and an authoritative learning reference
Use boundary
Choose the maximum decimal places shown. This does not increase source accuracy.
The body is isolated and spherical, with no atmosphere, rotation, propulsion profile, or other gravity sources.
Use internally consistent units and retain extra precision when carrying the result into another calculation.
Reviewed reference factors