DIMENSIONS AND MATHEMATICS

OF THE GREAT PYRAMID



Exterior Dimensions

Exact measurements of the Great Pyramid were first made by W.M. Flinders Petrie, and published in 1883 by the Royal society in his book, "The Pyramids and Temples of Gizeh". The Great Pyramid was professionally surveyed by J.H. Cole, and the measurements were published in his "Determination of the Exact Size and Orientation of the Great Pyramid", published by Government Press, Cairo, 1925. Many of these measurements were subsequently recorded in "The Great Pyramid Decoded", by Peter Lemesurier, 1977.



Height (including capstone): 480.69 feet



Courses: 201 (40 storeys)



Length of Sides:

West: 755.76 feet

North: 755.41 feet

East: 755.87 feet

South: 756.08 feet



Perimeter: 3023.22 feet



Angle of Corners

Northwest: 89° 59' 58"

Northeast: 90° 3' 02"

Southeast: 89° 56' 02"

Southwest: 90° 3' 02"



Apothem

(Distance from the apex, or highest point, down one side to the center of a base): 610 feet



Slope of North Face: 51° 50' 40"



Area of the Base: 13 acres



Number of Blocks: more than 2.5 million



Weight of Blocks: 2-70 tons each



Size of original limestone casing stones: Some weigh 15 tons each



Latitude of the Apex: 29° 58' 51" North



Longitude of the Apex: 31° 8' 2" East



Dimensions of Interior Chambers

From measurements taken by Petrie and Rutherford



Ascending Passage

Height: 3.94 ft

Length: 97.6 ft

Width: 3.4 ft

Slope: 26°



Descending Passage:

Height: 3.94 ft

Length: 344.3 ft

Width: 3.4 ft

Slope: 26° 30'



Subterranean Chamber:

Length: 46.1 ft

Width: 26.9 ft



Dead End Passage Length: 53.8 ft



Grand Gallery

Height: 28.2 ft.

Width: 3.4 ft

Length: 156.9 ft

Slope: 26°



King's Chamber

Length: 34.38 ft

Width: 17.19 ft

Height (to floor surface): 17.1 ft

Height (to true base): 19.2 ft



Queen's Chamber

Passage (first portion)

Height: 3.9 ft

Width: 3.4 ft.

Passage (second protion)

Height: 5.6

Width: 3.4 ft

Length (E to W): 18.9 ft

Width (N to S): 17.19 ft

Height: 15.3 ft

Height to Apex: 20.3

Slope of ceiling: 30° 26'



Angle of "Air Shafts"

Queen's Chamber

North: 39°

South: 39° 30'

King's Chamber

North: 32° 28'

South: 45°



PI Ratio of the Great Pyramid

PHI Ratio of the Great Pyramid

Dimensions of the King's Chamber

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© 2000 R.McKenty . All rights reserved.

Updated September 15, 2000.

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