Orbital & escape velocity
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Formula
v₁ = √(GM/r), v₂ = √(2GM/r)
Worked example
Given: Body mass = 5.972E24 kg; Distance from centre = 6,371 km
Result: Orbital speed = 28,474.85 km/h; Escape velocity = 40,269.52 km/h; Orbital period = 1.41 h
How it is calculated
1. Enter the values you know. 2. The calculator converts them to base units and applies the formula. 3. The result is shown in the unit you choose.
Frequently asked questions
How do I calculate it?
Formula: v₁ = √(GM/r), v₂ = √(2GM/r). Given: Body mass = 5.972E24 kg; Distance from centre = 6,371 km. Result: Orbital speed = 28,474.85 km/h; Escape velocity = 40,269.52 km/h; Orbital period = 1.41 h.
Is the calculator free and private?
Yes. It is free, needs no sign-up and runs in your browser — the numbers you type stay on your device.