How big is Taipei 101?
Taipei 101: 508 m (1,667 ft). Measured as height — architectural height.
Source: Wikipedia — Taipei 101
Where it sits
Among the 23 buildings & towers on this page Taipei 101 ranks 9th from the top by size. The largest in the group is Burj Khalifa at 828 m, which is 1.63× the size of Taipei 101, while the smallest, Christ the Redeemer, is 30 m.
Stand an adult of 1.7 m beside it and the ratio is 299×: you would need 298 people stacked head to foot to match its size.
In everyday distances
A football pitch is about 105 m long. Taipei 101 is 4.84× that, which puts it at 4.8 pitch lengths from end to end.
Walking at an easy 1.4 m/s you cover 508 m in 6 minutes. A jet at 900 km/h covers it in 2 seconds.
Next to its neighbours in size
The nearest thing larger than it in this collection is One World Trade Center at 541 m (1,776 ft), 1.07× the size. Both figures are the same kind of measurement, so the gap is a fair one.
The nearest thing smaller is Petronas Towers at 452 m (1,483 ft), so Taipei 101 is 1.12× as big as it. They sit in the same group.
Against fixed yardsticks
Against three fixed yardsticks — Taipei 101 is 1.54× the size of Eiffel Tower (330 m); Taipei 101 is 17× the size of blue whale (29.9 m); Earth (12,742 km) is 25,083× the size of Taipei 101.
How this figure was taken
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.
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.
Read the rest — common questions
How big is the Taipei 101?
508 m (1,667 ft), measured as height: architectural height.
Where does the Taipei 101 rank among buildings & towers?
Number 9 of 23 on this site, from Burj Khalifa at 828 m down to Christ the Redeemer at 30 m.
What is the next size up?
One World Trade Center, at 541 m, is 1.07× the size.
What is the next size down?
Petronas Towers, at 452 m, is 1.12× smaller.
How reliable is the figure?
It is taken from the cited Wikipedia article and states its basis (architectural height). Values are rounded, and where individuals differ the figure is a representative one, so expect small differences from other sources.