Burj Khalifa vs Tokyo Skytree
Burj Khalifa (828 m) is 1.31× the size of Tokyo Skytree (634 m).
Tokyo Skytree is 77% of the height of Burj Khalifa. The gap between them is 194 m (636 ft).
The comparison in numbers
| Thing | Size | In feet | Measured as |
|---|---|---|---|
| Burj Khalifa | 828 m | 2,717 ft | height |
| Tokyo Skytree | 634 m | 2,080 ft | height |
What the scale shows
Burj Khalifa (828 m) is 1.31× the size of Tokyo Skytree (634 m). The gap between them is 194 m (636 ft). Both are buildings & towers, so the figures describe the same kind of thing.
Draw both on one baseline and the smaller one fills 77% 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.
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What each figure means
The figure for Burj Khalifa is its height (architectural height). The figure for Tokyo Skytree is its height (tower height).
Crossing them
Walking pace is 1.4 m/s, so crossing Burj Khalifa's 828 m takes 9.9 minutes and Tokyo Skytree's 634 m takes 7.5 minutes.
In people: Burj Khalifa is 487 adults of 1.7 m tall, Tokyo Skytree is 372.9. By size Burj Khalifa is 1st of the 23 buildings & towers on this site and Tokyo Skytree is 2nd, so 1 place separates them in the ranking.
How to read these two figures
Before trusting any comparison, check what each number measures. The Burj Khalifa is given as a height, architectural height. The Tokyo Skytree is given as a height, tower height. Both are height figures, so putting them on one baseline is a like-for-like comparison, although the exact individual or convention still matters.
Building heights depend on the rule used: architectural height counts spires but not antennas, tip height counts everything. The basis is named with each figure.
Where the pair sits among all the sizes here
Across all 86 things on this site, the Burj Khalifa is number 27 from the top and the Tokyo Skytree is number 28. 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 1.31× is easy to picture, but area and volume grow faster than length. If two objects had exactly the same shape, the Burj Khalifa would have about 1.71× the surface or footprint of the Tokyo Skytree, and about 2.23× 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. The Tokyo Skytree is drawn 77% as tall as the Burj Khalifa, but the equivalent share of footprint would be only 58.6%, which is why the smaller one looks even slighter than the numbers alone suggest.
Time to cross each one
A sprinter holding about 10 m/s covers the Burj Khalifa in 83 seconds and the Tokyo Skytree in 63 seconds. Sound, at about 343 m/s in air, takes 2.4 seconds for the larger and 1.8 seconds for the smaller. A jet cruising at 900 km/h needs 3.3 seconds and 2.5 seconds.
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 1.31× ratio as the sizes.
The same figures in other units
The Burj Khalifa measures 828 m, which is 2,717 ft or 905.5 yards. The Tokyo Skytree measures 634 m, which is 2,080 ft.
The difference between them is 194 m (636 ft). In metres the smaller one is 634 against 828, so the 1.31× ratio holds in every unit; only the numbers on the ruler change.
Questions people ask about this pair
Which is bigger, the Burj Khalifa or the Tokyo Skytree?
The Burj Khalifa is bigger. At 828 m it is 1.31× the size of the Tokyo Skytree, which is 634 m.
How many times does the Tokyo Skytree fit along the Burj Khalifa?
Less than twice: the Tokyo Skytree is 77% of the size of the Burj Khalifa, so one fits with 194 m to spare.
Are the two figures measured the same way?
Yes in kind: both are height figures. The Burj Khalifa is architectural height; the Tokyo Skytree is tower height.
How does the gap look in people?
Taking an adult of 1.7 m, the Burj Khalifa is about 487 people tall and the Tokyo Skytree is about 372.9. The gap of 194 m is 114 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.