How big is Jupiter?

Jupiter is one planet in the solar system which justifies use of the word "gigantic". It is mostly composed of hydrogen, helium, and methane, including the very cold and dense liquid and solid phases of these gases.
Its size can be described in a number of ways, and we can use Earth as a comparison (figures are approximate):
Diameter: 142,800 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)
Compared to the Sun, which is an average sized star, Jupiter is small fry. You could fit over 1,000,000 (one million) Earths inside the Sun.
Jupiter has more than twice as much mass as all the other planets combined!