How does the Schwarzschild Radius Calculator work?

Input mass (solar masses or kg) Then: Apply r_s = 2GM/c² Then: Results show black hole horizon size.

Can you give an example of how to use the Schwarzschild Radius Calculator?

Example: Input M = 10 solar masses gives a result of r_s ≈ 30 km, density ≈10¹¹ kg/m³ (Stellar-mass black hole).

Is the Schwarzschild Radius 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 Schwarzschild Radius Calculator?

Our Schwarzschild Radius 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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Schwarzschild Radius Calculator

Mass (Solar Masses)

Schwarzchild radius is event horizon size of non-rotating black hole. Objects inside cannot escape, even light.

Difficulty:advanced

References

›Schwarzchild Radius — Wikipedia

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Schwarzschild Radius Calculator

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Schwarzschild Radius Calculator