Neptune's diameter is 30,599 miles (49,244 km)
Neptune
Yes, it's diameter is 30,685 miles, it is also a gas giant.
Neptune has a diameter of 30,685 miles.
The diameter of Planet Uranaus is 51,118 km, and the diameter of Neptune is 49,528 km.
Neptune
It is a big planet.
Yes, scientists say Neptune is shrinking as we know it.
Uranus is one of the bigger planets. It is the third largest planet in diameter but it is smaller in mass than Neptune.
Well, Neptune is a little smaller than Uranus, so that makes Neptune the smallest outer planet!
Assuming you mean size and not sixe, Neptune is 49,530 km in diameter.
It is more big than small, with a diameter of 49,000 km, not quite as big as Neptune.
4952800000 cm = 4.9528*109 cmThe diameter of Neptune, in kilometers, is 49528 km. (See http://www.kidzworld.com/article/1404-neptune-the-windy-planet )100000 cm=1 km, so 49528 km=49528 km*100000 cm/km=49528*100000 cm=4952800000 cm = 4.9528*109 cm