Supermassive black holes have a wide range of masses, but generally fall into this range:

10^5 to 10^10 solar masses

This means they can be anywhere from 100,000 to 10 billion times more massive than our Sun.

Here's a breakdown of different categories:

* Intermediate-mass black holes: 100 to 100,000 solar masses

* Supermassive black holes: 100,000 to 10 billion solar masses

* Ultramassive black holes: Above 10 billion solar masses

It's important to note that the upper limit of a supermassive black hole's mass is still being investigated. Some astronomers believe that black holes much larger than 10 billion solar masses may exist.