This tool will calculate the Schwarzschild radius, or the radius of a black hole’s event horizon, based on the mass you input.

A Schwarzschild radius calculator helps you find the radius of a black hole given its mass. Simply enter the mass of the object in kilograms, and click “Calculate” to display the Schwarzschild radius, which is the radius of a sphere such that, if all the mass of an object were to be compressed within that sphere, the escape velocity from the surface would equal the speed of light.

## How to Use the Calculator

- Enter the mass of an object in kilograms into the input field.
- Click the “Calculate” button to compute the Schwarzschild Radius.
- View the result in the Result field which gives you the radius in meters.

## How it Calculates Results

The calculator uses the Schwarzschild radius formula:
`R = (2 * G * M) / c^2`

, where:

**R**is the Schwarzschild radius,**G**is the gravitational constant (6.67430 x 10^{-11}m^{3}kg^{-1}s^{-2}),**M**is the mass of the object in kilograms,**c**is the speed of light in a vacuum (approximately 299,792,458 meters per second).

## Limitations of the Calculator

The Schwarzschild radius calculator assumes a non-rotating, spherically symmetric mass which is a simplified model of a black hole. It might not accurately reflect the properties of real astrophysical black holes, which can rotate and exhibit charge. The Schwarzschild solution is only valid outside the event horizon; it does not describe the interior of a black hole. Additionally, this calculation does not account for the effects of general relativity in strong gravitational fields.