Black Hole Event Horizon Radius Calculator
Black Hole Event Horizon Radius Calculator helps you determine the Schwarzschild radius (event horizon) of a black hole based on its mass using Einstein’s field equations.
Black Hole Mass
Event Horizon Radius Analysis
Size Comparison
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Small
Stellar Intermediate
Mass Supermassive
Black Hole
Stellar Intermediate
Mass Supermassive
Black Hole
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Radius (km)
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Diameter (km)
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Volume (km³)
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Avg. Density (kg/m³)
Black Hole Classification
How to Use:
- Enter the mass of the black hole in the input field.
- Select the appropriate unit for the mass (solar masses, kilograms, or Earth masses).
- Click “Calculate Event Horizon Radius” to compute the Schwarzschild radius.
- View the results including radius, diameter, volume, and average density.
- See the classification of the black hole based on its mass.
Formulas Used:
Schwarzschild Radius Formula:
\( R_s = \frac{2GM}{c^2} \)
Where:
\( R_s \) = Schwarzschild radius (event horizon)
\( G \) = gravitational constant (\(6.67430 \times 10^{-11} \text{m}^3\text{kg}^{-1}\text{s}^{-2}\))
\( M \) = mass of the black hole
\( c \) = speed of light (\(299792458 \text{m/s}\))
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