30.800
Neptune's diameter is about 30775.2724 miles.
Planet Neptune has a surface area of 2.941 billion sq miles (7.618 billion km²).
Neptune's diameter is 30,599 miles (49,244 km)
It is 15 square miles big It is 15 square miles big
In terms of surface area, Neptune covers 7.618 billion km²
495,755.1 square miles.
905,567 square miles
163,696 square miles.
2,490 square miles.
163,707 square miles.
Philippines - 115,830.6 square miles.
385 square miles (including 42.5 square miles of water).