Equatorial Radius of Jupiter
| Value | 71,492,000 m |
| Status | Measured: ± 4,000 m (0.000056 relative) |
| Source | NASA planetary fact sheet (equatorial radius at 1 bar) |
| Categories | Astronomicalsolar-systemplanets |
R_jup in every length unit
| femtometer | 7.1492000e+22 fm |
| picometer | 7.1492000e+19 pm |
| nanometer | 7.1492000e+16 nm |
| micrometer | 71,492,000,000,000 μm |
| millimeter | 71,492,000,000 mm |
| centimeter | 7,149,200,000 cm |
| decimeter | 714,920,000 dm |
| meter | 71,492,000 m |
| kilometer | 71,492 km |
| inch | 2,814,645,700 in |
| foot | 234,553,810 ft |
| yard | 78,184,602 yd |
| mile | 44,423.069 mi |
| nautical mile | 38,602.592 nmi |
| astronomical unit | 0.0004778945 AU |
| light-year | 7.5567104e-09 ly |
| parsec | 2.3168979e-09 pc |
Learning zone
A gas giant has no surface, so its radius is quoted at a chosen pressure level — conventionally where the atmosphere reaches one bar. Jupiter spins once in 9 h 56 m, the fastest of any planet, and the resulting bulge is visible in any decent telescope: the equatorial radius exceeds the polar by 4638 km, a flattening of 1/15 against Earth's 1/298.
Because the rotation is differential, with the equator circulating faster than mid-latitudes, planetary scientists use System III, tied to the rotation of the magnetic field, as the definitive rotation period. Eleven Earths would fit across the disc, and the Great Red Spot alone has been wider than our planet — though it has been shrinking for a century and a half.