Which of the three pyramids at Giza is the largest?

The answer is: the northeastern one, i.e., the Great Pyramid. It is the largest in every respect: height, base area, and volume.

Nevertheless, almost everyone visiting the site for the first time asks the question again. On most photos, the middle pyramid appears significantly the tallest. This is because it stands on higher ground, has a steeper angle, and is the only one to retain its apex along with a cap of the original casing stones.

The comparison of the three pyramids at Giza is therefore a good example of how unreliable visual perception can be when it comes to structures of this magnitude. Without a reference point, the eye misjudges; with a false reference point, it misjudges systematically.

More interesting than the ranking, however, is the disparity in size. There are only a few meters of difference in height between the first and second pyramids, but worlds of difference between the second and third. The smallest reaches less than half the height and about one-tenth of the volume of the largest.

A preliminary note on the numbers themselves. None of the original heights were measured, as the apex is missing or damaged on all three structures. What appears in tables is calculated backwards from the base side and slope. Volume figures are also calculated values and include an unknown amount of natural bedrock that the builders left standing and incorporated into the construction. This is sufficient for comparison, but not for precise cubic meter specifications.

This page presents the numbers side by side, explains the optical effect, and finally answers the question of why there are three structures standing next to each other at all.

Greek names in German, Egyptian names in academic literature

What are the three pyramids at Giza called? In German, they bear the Greek forms of their builders' names: Cheops, Chephren, and Mykerinos. In academic literature, the Egyptian forms Chufu, Khafre, and Menkaure are more common.

The order on the ground corresponds to the order of generations. The grandfather built in the northeast, the son in the middle, and the grandson in the southwest. Therefore, if you look from right to left when approaching from the southwest, you are looking backward in time.

This assignment is secure. It results from the construction sequence on the site, from the officials' tombs surrounding it, whose owners can be assigned to specific kings, and in the case of the largest complex, from markings by the building crews in inaccessible chambers. The official overview of the site lists them accordingly as three separate complexes.

Confusions almost always arise in the same way. Because the middle pyramid has the most striking silhouette, it is assumed to be the largest and then given the most famous name. On photos taken from the southeast, it is also often in the foreground.

Complicating matters further is that the name forms themselves change. Older German texts use Mykerinos, while newer ones more frequently use Menkaure, and for the middle builder, you will find Chephren, Chefren, and Khafre side by side. They refer to the same individuals. Therefore, if you compare two sources and encounter different names, it is usually not a matter of different kings, but of different transliterations.

A simple mnemonic helps against this: The pyramid with the dark cap at the apex is never the largest.

Why the middle one appears taller

Why the middle pyramid appears taller can be explained in three points, all of which are verifiable.

First, the terrain. The rock ridge rises towards the southwest, and the base of the middle complex lies approximately ten meters above that of its neighbor. However, the height of a structure is measured from its own base, not from sea level. Therefore, the peak of the middle pyramid is indeed higher, but the structure itself is not.

Second, the slope. The middle one rises at just over 53 degrees, while the largest rises at just under 52. The difference sounds insignificant, but at over a hundred meters in height, it is clearly visible: a steeper flank looks slimmer and more imposing.

Third, the apex. The largest is missing the top layers including the capstone, so it ends in a small platform at the top. The middle one has retained its apex, and the preserved casing cap below it accentuates this further.

A fourth, smaller effect comes into play with photos. Telephoto shots from a greater distance compress space and make structures lined up behind each other appear the same size, while wide-angle shots from close up exaggerate the size of the front structure. Both distortions are common in travel photography, and neither can be corrected by the naked eye.

Together, this creates an impression that contradicts measurement. If you want to verify it yourself, look for a location from which both bases are visible. From there, the effect disappears.

How precisely these structures have been surveyed is shown in studies on their orientations: The deviations from true north lie within the range of arcminutes for all three.

Volume shifts the perspective

Volume is the more meaningful metric, and it shifts the perspective considerably.

In terms of height, the first two differ by about three meters, or roughly two percent. In terms of volume, the difference is around fifteen percent, because volume grows with the cube of the edge length, and the base side of the middle pyramid is fifteen meters shorter. An apparently small difference in base area makes a huge difference in mass.

With the third pyramid, the comparison breaks down completely. It reaches less than half the height of the largest and about one-tenth of its volume. Thus, it is not a smaller version of the same task, but a project of a different magnitude.

This also explains why it remained unfinished. For a structure of this scale, the granite casing could have been completed if time had permitted; mass was not the problem. What was lacking was the reign of the builder.

A comparison within the site makes the magnitude tangible, and it can be recalculated using the table above. If you add the volumes of the middle and smallest pyramids together, you arrive at approximately the volume of the largest alone. So, a single structure contains about as much material as its two neighbors combined, despite a height difference of only three meters to the second.

However, such rough calculations should be treated with caution. All three structures stand on natural bedrock, which was incorporated into the construction to an unknown extent, and no one knows how much volume corresponds to this bedrock core for each pyramid. The ratios are correct, but the absolute numbers carry uncertainty.

And it relativizes the ranking. The question of which is the largest has a clear answer. The question of whether the third plays in the same league has an equally clear answer: no.

Three, and not one or ten

Why are there three pyramids at Giza, and not one or ten?

Because three consecutive kings chose the same location. Every ruler of the Old Kingdom had his own complex built, and the location was not a family tradition, but a decision made anew upon each accession to the throne. In this case, it fell on the same rock ridge three times in a row.

The reason there weren't more is twofold. Between the first and second, a king ruled who moved to Abu Rawash, and after the third, his successor changed the building form entirely and had himself buried in Sakkara in a rectangular structure. Pyramid building on this scale thus ended after three generations.

The reason there weren't fewer lies in the space. The first structure stands as far north as the load-bearing bedrock allowed, leaving room for the following two. Whether this was intentional or coincidence is debated, but the result is clear: exactly three complexes of this size fit on the ridge.

A final observation on the sequence: The structures get smaller, not larger. Those expecting a successor to try to outdo the predecessor will find the opposite here. The second complex remains just below the first, and the third drops off significantly. Whether this was due to available time, changed priorities, or exhausted resources is unclear.

Today, all three are protected together with the other pyramid fields as a World Heritage Site, listed as a contiguous landscape rather than three individual structures.

Frequently asked questions

Which pyramid is the largest?

The northeastern one, the Great Pyramid, with an original height of 146.6 meters and approximately 2.6 million cubic meters of construction volume.

Why does the middle one look taller?

Because it stands on terrain approximately ten meters higher, rises more steeply, and is the only one to retain its apex along with the casing cap.

How big is the difference between the first two?

About three meters in height, and around fifteen percent in volume. The base side of the middle pyramid is about fifteen meters shorter.

And the third one?

It drops off significantly: less than half the height of the largest and about one-tenth of its volume.

Are the height figures measured?

The current ones are. The original heights are mathematically reconstructed because the apex is missing or damaged on all three.