What is the base length of the Great Pyramid in meters?

The base length of the Great Pyramid is about 230 meters on each side. More precisely, surviving surveys commonly give an average side length of approximately 230.3 meters, corresponding to the ancient design measure of 440 royal cubits.

The Great Pyramid was built for Pharaoh Khufu during Egypt’s Fourth Dynasty and originally stood about 146.6 meters high. Its four sides were carefully aligned with the cardinal directions, and the builders squared the enormous base with remarkable accuracy. The monument’s volume is roughly 2.6 million cubic meters, including an internal natural hillock.

A common mix-up is to confuse the base length with the pyramid’s height. Its original height was around 146.6 meters, while each base side measured about 230.3 meters. The present height is approximately 138.5 meters because much of the smooth white Tura-limestone casing was removed or lost.

The ancient Egyptian royal cubit was not exactly identical in every surviving context, but the Great Pyramid’s 440-cubit base is the conventional figure. That measurement helps explain why references may show either 230 meters or the more precise 230.3 meters.