Orbital Velocity Calculator — v = √(GM/r)
A satellite stays up by moving sideways fast enough that as it falls, the curved surface drops away beneath it. G = 6.67430×10⁻¹¹ N·m²/kg² is built in.
Orbital Velocity Calculator — v = √(GM/r)
How to interpret the result
Low Earth orbit (~6,771 km from Earth's center) needs about 7.66 km/s — roughly 27,600 km/h. Higher orbits are slower.
Assumptions
- Circular orbit
- Central body treated as a point mass
- Radius measured from the body's center