How does the Orbital Velocity Calculator work?

Enter the central body's mass, orbital radius, and gravitational constant Then: The calculator applies V_orbit = √(GM / r) Then: Results show circular orbital speed.

Can you give an example of how to use the Orbital Velocity Calculator?

Example: Input M = 5.972 × 10²⁴ kg (Earth), r = 6.378 × 10⁶ m (surface) gives a result of V_orbit ≈ 7,900 m/s (First cosmic velocity).

Is the Orbital Velocity Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Orbital Velocity Calculator?

Our Orbital Velocity Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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Orbital Velocity Calculator

Orbital Velocity

Central Mass (kg)

Orbital Radius (m)

Orbital velocity is the speed needed to maintain a circular orbit at a given altitude. It depends on the central body's mass and orbital radius.

Symbol	Name	Unit	Description
GM	GM value	—	Variable used in the calculation

Difficulty:intermediate

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Did You Know?

The International Space Station orbits at 7.66 km/s about 400 km altitude, completing one orbit every 90 minutes.

References

›Orbital Velocity

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Orbital Velocity Calculator

Orbital Velocity

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