Saturn vs Uranus
Saturn (120,536 km) is 2.36× the size of Uranus (51,118 km).
2 Uranuss stacked on end would reach the height of Saturn. The gap between them is 69,418 km (227,749,344 ft).
The comparison in numbers
| Thing | Size | In feet | Measured as |
|---|---|---|---|
| Saturn | 120,536 km | 395,459,318 ft | diameter |
| Uranus | 51,118 km | 167,709,974 ft | diameter |
What the scale shows
Saturn (120,536 km) is 2.36× the size of Uranus (51,118 km). The gap between them is 69,418 km (227,749,344 ft). Both are planets & moons, so the figures describe the same kind of thing.
Draw both on one baseline and the smaller one fills 42% of the frame while the larger one runs to the top. The two are close enough that the difference is easy to see side by side.
Read the rest — 8 more sections
What each figure means
The figure for Saturn is its diameter (equatorial diameter). The figure for Uranus is its diameter (equatorial diameter).
Crossing them
At a jet's 900 km/h, Saturn's 120,536 km would take 5.6 days and Uranus's 51,118 km would take 2.4 days.
In people: Saturn is 70,903,529 adults of 1.7 m tall, Uranus is 30,069,411.8. By size Saturn is 3rd of the 16 planets & moons on this site and Uranus is 4th, so 1 place separates them in the ranking.
How to read these two figures
Before trusting any comparison, check what each number measures. Saturn is given as a diameter, equatorial diameter. Uranus is given as a diameter, equatorial diameter. Both are diameter figures, so putting them on one baseline is a like-for-like comparison, although the exact individual or convention still matters.
Worlds are listed by diameter. Gas giants are not round, so equatorial diameter is used for them and mean diameter for the rest. All figures are rounded from published mission data.
Where the pair sits among all the sizes here
Across all 86 things on this site, Saturn is number 3 from the top and Uranus is number 4. No other item falls between them, so in this collection they are direct neighbours.
Because the collection spans 13 mm up to 1,392,700 km, a ratio of 107,130,769,231× from smallest to largest, the position of a pair says a lot: both sit in the upper third of the list.
What the length ratio hides
A length ratio of 2.36× is easy to picture, but area and volume grow faster than length. If two objects had exactly the same shape, Saturn would have about 5.56× the surface or footprint of Uranus, and about 13.1× the volume. These two are not the same shape, so treat the figures as an upper bound for an imaginary scaled copy, not as a measurement of either one.
The drawing above shows length only. Uranus is drawn 42% as tall as Saturn, but the equivalent share of footprint would be only 18%, which is why the smaller one looks even slighter than the numbers alone suggest.
Time to cross each one
Light travels at 299,792,458 m/s, so it crosses Saturn (120,536 km) in 402 milliseconds and Uranus (51,118 km) in 171 milliseconds. A jet at 900 km/h would take 5.6 days for the larger and 2.4 days for the smaller.
These times assume a straight line and constant speed, which no real crossing has, but they turn a number in metres into something the body understands. At any fixed speed the travel times keep the same 2.36× ratio as the sizes.
The same figures in other units
Saturn measures 120,536 km, which is 395,459,318 ft or 74,897.6 miles. Uranus measures 51,118 km, which is 167,709,974 ft or 31,763.25 miles.
The difference between them is 69,418 km (227,749,344 ft). In kilometres the smaller one is 51,118 against 120,536, so the 2.36× ratio holds in every unit; only the numbers on the ruler change.
Questions people ask about this pair
Which is bigger, Saturn or Uranus?
Saturn is bigger. At 120,536 km it is 2.36× the size of Uranus, which is 51,118 km.
How many times does Uranus fit along Saturn?
2 whole times, with 18,300 km left over, using 51,118 km for each.
Are the two figures measured the same way?
Yes in kind: both are diameter figures. Saturn is equatorial diameter; Uranus is equatorial diameter.
How does the gap look in people?
Taking an adult of 1.7 m, Saturn is about 70,903,529 people tall and Uranus is about 30,069,411.8. The gap of 69,418 km is 40,834,118 people.
Where do the numbers come from?
Each item has its own page that names the measurement and links to the Wikipedia article it was taken from. Some figures are rounded, and animals vary from one individual to the next, so treat them as representative values rather than records for every case.
How the sizes are taken. Each figure says what it measures — height, length, diameter or elevation — and for which individual or convention. Everything is drawn standing upright on one baseline so a single scale holds, including things that are long rather than tall. Values come from the linked Wikipedia article for each item.