Escape Velocity Calculator - Free, Instant, In Your Browser
Enter the mass (kg) and radius (m) of a celestial body to calculate its escape velocity.
How to use Escape Velocity Calculator
- 1Enter the required date(s) and details above.
- 2Click Calculate - Escape Velocity Calculator runs instantly, right in your browser.
- 3Read your result below.
Your file is processed in your browser and is never uploaded.
Frequently Asked Questions
What's the formula?
v = √(2GM / r), where G is the gravitational constant (6.674 x 10⁻¹¹), M is mass, and r is radius. Earth: ~11.2 km/s.
Is my data sent to a server?
No - everything runs entirely in your browser with JavaScript. Nothing is uploaded.