🕳️ Black Hole Schwarzschild Radius
Squeeze any mass small enough and it becomes a black hole. Find that size.
Results
- Schwarzschild radius
- 2.95338 km
- Earth check: ~0.00000887 km (8.87 mm)
How it works
rₛ = 2GM / c²
The Schwarzschild radius is the size of the event horizon for a non-rotating black hole. For Earth it is only about 8.9 mm — a marble. For the Sun, about 2.95 km.
Assumptions: Non-rotating, uncharged black hole.
Reference: Schwarzschild (1916), general relativity