Position the two structures side by side and the disparity is almost humorous. The Empire State Building towers significantly higher, a slender steel pinnacle that was erected in just over a year. The Great Pyramid is shorter, broader, and dates back over four thousand years.
Nevertheless, the pyramid’s mass is approximately eighteen times greater than that of the skyscraper. One is a hollow framework striving toward the heavens, while the other is a nearly solid edifice of hewn stone with hardly any voids within.
This weight ratio is the intriguing aspect, highlighting something less apparent than simply which structure is larger. The weight difference actually reflects a difference in construction technique. We aim to explore where these figures originate and what they imply regarding two distinctly different approaches to erecting a massive structure.
The pyramid, block upon block
Begin with the statistics that most people are familiar with. The Great Pyramid is often said to comprise roughly 2.3 million blocks of stone, with the average block typically estimated to weigh around two and a half tonnes. While estimates of the pyramid’s total weight differ, a commonly referenced breakdown suggests it contains about 5.5 million tonnes of limestone, 500,000 tonnes of mortar, and 8,000 tonnes of granite — totaling nearly 6 million metric tonnes.
This figure is inherently approximate. No one has weighed the pyramid as a whole. The estimates arise from calculating its volume, the types and density of the materials utilized, and the dimensions and count of its blocks; therefore, slight variations in these assumptions could alter the total by hundreds of thousands of tonnes.
What the estimates concur on is the nature of the structure. It is carved limestone assembled into a solid mass, with granite transported from Aswan and fine casing stone sourced from Tura. There is minimal empty space within. Aside from a few narrow corridors and chambers, it is predominantly stone throughout. It was constructed for Pharaoh Khufu, with the building period generally estimated at around 20 years, a timeframe credited to the ancient Greek historian Herodotus.
If you align those figures with the timeline, the pace becomes difficult to visualize. A 2025 study published in npj Heritage Science outlines the standard calculations: 2.3 million blocks over about 20 years of long workdays necessitates placing a block, some weighing several tonnes, every one to three minutes based on the used assumptions. This figure remains more memorable than the total weight. A block placed every few minutes, year after year, signifies an extraordinary workflow.
The skyscraper as the contemporary standard
The Empire State Building simplifies the comparison as it contrasts the pyramid’s construction. Its official weight is 365,000 tons. Since this is an American measurement, the units must be aligned before the comparison. Approximately 6 million metric tonnes for the pyramid converts to about 6.6 million U.S. short tons. Dividing that by 365,000 indicates that the pyramid’s mass is just a bit over eighteen times that of the Empire State Building.
Where the weight resides reveals the true narrative. The building’s load is supported by a steel framework weighing around 60,000 tons of steel, encased in brick and a relatively thin covering of stone and aluminum. The <a href="https://