basic

Orbital Velocity Calculator

v = √(GM / r) for a circular orbit.

Compute the circular orbital velocity at a given orbital radius around a central mass, using v = √(GM / r) with G = 6.674 × 10⁻¹¹.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

kg
m

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

v = √(G · M / r)

In depth

Compute the circular orbital velocity at a given orbital radius around a central mass, using v = √(GM / r) with G = 6.674 × 10⁻¹¹.