How big is Big Ben compared to a Boeing 737?
Big Ben measures 96 m (315 ft) from the ground up, and a Boeing 737 measures 39.5 m (129.6 ft) from the ground up. A Boeing 737 would have to grow by 143% to match Big Ben, which is 2.43 times its height. Take 2 Boeing 737s stacked up and you reach 79 m (259.2 ft), still 17 m (55.8 ft) short of Big Ben; one more would overshoot by 22.5 m (73.8 ft). Big Ben and a Boeing 737 are both written in tens of metres, so the 2.43-to-one gap has to be read off the digits rather than off the unit.
| Object | Real size | Axis measured | What the figure covers |
|---|---|---|---|
| Big Ben | 96 m 315 ft |
Height | Elizabeth Tower |
| Boeing 737 | 39.5 m 129.6 ft |
Height | Class |
Both figures, Big Ben and Boeing 737, come from the Size It Up measurement set, one real-world size and one measured axis per object, last checked in September 2026; outline provenance is listed on the sources page.
Why this one is hard to judge by eye
Nothing this size arrives at the eye whole: Big Ben reaches you as a small angle from wherever you can stand back far enough to see it, and the brain fills the rest in from what it expects, which is how 56.5 m of difference goes unnoticed. On the drawing above Big Ben is about 5.15 times as tall as it is wide and a Boeing 737 about 1.07 times as tall as it is wide, so the two outlines fill the frame in ways that have nothing to do with the one axis being compared.
What each figure covers
Big Ben. The 96 m is Elizabeth Tower, the structure. Big Ben is the bell inside it, a distinction that quietly breaks half the comparisons published about it.
Boeing 737. The 39.5 m is fuselage length for the common member of the family. Tail height is about a third of that, so a 737 is far longer than it is tall.
Big Ben and a Boeing 737 are both quoted as a height, which is what makes the ratio above a like-for-like figure.
What else is about that size?
Measured the same way, Big Ben at 96 m sits within a quarter of King Kong at 102 m, Victoria Falls at 108 m and Giant Sequoia at 83.8 m. Boeing 737 at 39.5 m has Christ the Redeemer at 38 m, Colosseum at 48.5 m and Chichen Itza at 30 m for company, within a quarter. Swapping any of those in for Big Ben would move its ratio to a Boeing 737 by less than 25%.