# What is the circumference of a black hole?

##### 1 Answer

Mar 30, 2017

It will vary with mass.

#### Explanation:

From window to universe"he more massive an object, the bigger its diameter once it becomes a black hole. If the Earth became a black hole it would have a diameter of about 0.017 meters, about the size of a marble. Our Sun would have a diameter of about 6000 meters, just a little less than 4 miles."