How big is Jupiter?

Answer 1

Jupiter is the largest planet in the Solar System and contains two and a half times the mass of all the other planets combined.

Jupiter is the one planet in the solar system, which justifies use of the word "gigantic". It is mostly composed of hydrogen, helium, and a little methane. It's roughly as large (in terms of volume/radius) as it's possible for a planet to get... adding more mass to an object the size of Jupiter just increases its density, until you get to about 80x the mass of Jupiter, at which point the density and temperature in the core is high enough to sustain hydrogen fusion and make it a star.

Compared to the Earth - we are a small speck [See related link - Size of the planets]

• Diameter: 1,983,800 km (Earth's diameter is 12,800 km)
• Mass: 1.8986×1027 kg (317.8 Earths)
• Surface area: 6.14×1010 km2 (120.5 times the surface area of Earth) you could fit 1,400 Earths inside Jupiter.

Compared to the Sun, which is an average sized star, Jupiter is small fry. [See related link - Size of the planets]

You could fit over 1,000,000 (one million) Earths inside the Sun

See related link [Jupiter] for more information.

Answer 2

71,500 kilometers at the equator it's mass is 1.8986 x 1027 kg (about 320x Earth's.)