The Schwarzchild radius is the radius defining the event horizon of a black hole. It can be calculated for any given mass.
The formula for calculating the Schwarzchild radius, RS , in meters is as follows:
Where M is in kilograms, c is in meters/second, and G is in meters3/kg/seconds2.
| Object | Weight (kilograms) |
|---|---|
| Planck Mass | 2.18 x 10-8 |
| Big Mac | 0.215 |
| Human | 70 |
| Moon | 7.35 x 1022 |
| Earth | 5.97 x 1024 |
| Jupiter | 1.90 x 1027 |
| Sun | 1.99 x 1030 |
| Milky Way | 1.6 x 1042 |
| Observable Universe | 8.8 x 1052 |
By the way the radius of a proton is 0.86 X 10-15m and the Planck length is 1.616229 X 10-35m.
This calculator returns the Schwarzchild radius for any mass entered.