You can't fit Earths *inside* the Sun. The Sun is a giant ball of plasma, and it's far too big for that.

Here's a more accurate way to compare their sizes:

* Volume: The Sun is about 1.3 million times the volume of Earth.

* Mass: The Sun is about 333,000 times the mass of Earth.

To give you a better idea of how big the Sun is, you could fit 1.3 million Earths inside the Sun if it were hollow!