Washington Monument vs Great Pyramid of Giza
Washington Monument (169 m) is 1.22× the size of Great Pyramid of Giza (139 m).
Great Pyramid of Giza is 82% of the height of Washington Monument. The gap between them is 30.5 m (100 ft).
The comparison in numbers
| Thing | Size | In feet | Measured as |
|---|---|---|---|
| Washington Monument | 169 m | 554 ft | height |
| Great Pyramid of Giza | 139 m | 454 ft | height |
What the scale shows
Washington Monument (169 m) is 1.22× the size of Great Pyramid of Giza (139 m). The gap between them is 30.5 m (100 ft). Both are buildings & towers, so the figures describe the same kind of thing.
Draw both on one baseline and the smaller one fills 82% 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 Washington Monument is its height (overall height). The figure for Great Pyramid of Giza is its height (its current height (146.6 m when built)).
Crossing them
Walking pace is 1.4 m/s, so crossing Washington Monument's 169 m takes 2 minutes and Great Pyramid of Giza's 139 m takes 1.6 minutes.
In people: Washington Monument is 99 adults of 1.7 m tall, Great Pyramid of Giza is 81.5. By size Washington Monument is 18th of the 23 buildings & towers on this site and Great Pyramid of Giza is 19th, so 1 place separates them in the ranking.
How to read these two figures
Before trusting any comparison, check what each number measures. The Washington Monument is given as a height, overall height. The Great Pyramid of Giza is given as a height, its current height (146.6 m when built). 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 Washington Monument is number 49 from the top and the Great Pyramid of Giza is number 50. 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: the pair sits in the middle of the range rather than at an extreme.
What the length ratio hides
A length ratio of 1.22× is easy to picture, but area and volume grow faster than length. If two objects had exactly the same shape, the Washington Monument would have about 1.49× the surface or footprint of the Great Pyramid of Giza, and about 1.82× 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 Great Pyramid of Giza is drawn 82% as tall as the Washington Monument, but the equivalent share of footprint would be only 67.2%, 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 Washington Monument in 17 seconds and the Great Pyramid of Giza in 14 seconds. Sound, at about 343 m/s in air, takes 493 milliseconds for the larger and 404 milliseconds for the smaller. A jet cruising at 900 km/h needs 676 milliseconds and 554 milliseconds.
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 1.22× ratio as the sizes.
The same figures in other units
The Washington Monument measures 169 m, which is 554 ft or 184.8 yards. The Great Pyramid of Giza measures 139 m, which is 454 ft.
The difference between them is 30.5 m (100 ft). In metres the smaller one is 138.5 against 169, so the 1.22× ratio holds in every unit; only the numbers on the ruler change.
Questions people ask about this pair
Which is bigger, the Washington Monument or the Great Pyramid of Giza?
The Washington Monument is bigger. At 169 m it is 1.22× the size of the Great Pyramid of Giza, which is 139 m.
How many times does the Great Pyramid of Giza fit along the Washington Monument?
Less than twice: the Great Pyramid of Giza is 82% of the size of the Washington Monument, so one fits with 30.5 m to spare.
Are the two figures measured the same way?
Yes in kind: both are height figures. The Washington Monument is overall height; the Great Pyramid of Giza is its current height (146.6 m when built).
How does the gap look in people?
Taking an adult of 1.7 m, the Washington Monument is about 99 people tall and the Great Pyramid of Giza is about 81.5. The gap of 30.5 m is 18 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.