Pyramid of Giza Stone Weights: From 2.5-Ton Blocks to 50-Ton Megaliths

The Mass Behind the Monument

The Great Pyramid of Khufu (c. 2560 BCE) comprises ~2.3 million stone blocks. Weight distribution is bimodal:

Core Blocks (Bulk ~85%)

• Material: Local nummulitic limestone (quarried <500m south).
• Average weight: 2.5 tonnes (2,500 kg).
• Dimensions: ~1.0 × 1.5 × 0.7 m. Roughly shaped, mortar-filled joints.
• Total core mass: ~5.5 million tonnes.

Casing Stones (Precision Exterior)

• Material: Fine white Tura limestone (quarried 13 km east, across Nile).
• Weight: ~2.5 tonnes each. Polished to optical flatness, joints <0.5 mm.
• Status: Almost all stripped (12th–19th century) for Cairo building stone. Few remain at base.

Megalithic Elements (Structural Critical Path)

• King's Chamber roof beams: 9 granite beams, 25–40 tonnes each (Aswan, 800 km south). Longest: 8.5m.
• Relieving chambers above: 5 tiers of similar beams—distributing 400+ tonnes of superstructure.
• Sarcophagus: Single hollowed granite block, ~3.75 tonnes.
• Grand Gallery corbels / portcullis stones: Granite, 5–15 tonnes.

Logistical Marvel

Moving 50-tonne granite from Aswan: quarried → loaded on barges (Nile flood) → unloaded at Giza harbor → sledded on lubricated clay tracks → ramped up. No wheels, no iron, no pulleys. Average car = 1.5 tonnes. The 50-tonne beams = 33 cars each.