The answer is not determinable both because scientists have not determined the exact volume of the universe and because the universe is always expanding.
Neptune is about 3.88 times larger than the Earth, so about 58.5 Earths could fit inside Neptune.
Approximately 1,321 Earths could fit inside Jupiter, given its massive size and volume.
1,321 Earths can fit in Jupiter.
Approximately 4 Earths would equal the diameter of Uranus
Jupiter's diameter is 11.209 Earth diametersMore than 1350 Earths would fit in the volume of Jupiter.
467,200,345 earths fit in the sun
The sun could fit over 1.3 million earths inside of it. Wow... see https://fretzreview.wikispaces.com/Milky+Way,+Universe,+Light+Years
6,000 earths
One.
It would take over 7,000,000,000,000,000 (7 quadrillion) Earths to fill the volume of VY Canis Majoris, the largest star in the universe
if jupiter were hallow around 11 earths could fit in jupiter
1300 earth can fit in it
stars really vary in size, but our sun could fit about 13 million earths I side of it
1.3 million Earths can fit inside the Sun
approximately 1.3 can fit in Jupiters core
Saturn is much larger than Earth. You could fit 764 Earths inside Saturn based on volume.
1,321 Earths can fit in Jupiter.