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About this object

Pentagon

Pentagon has an estimated weight of 635,029 tonnes. It ranks #9 of 52 in the Buildings & Structures category.

Source excerpt: A record-holding structure for the largest office building in the world, The Pentagon in Arlington, VA, is almost 4 million sq ft! The building itself spans close to 30 acres of land.

Position in category

52 Items in category 447,619 tonnes Category average 907 tonnes Category median 8 grams–5,750,000 tonnes Category span

Similar weight

Hibernia 635,937 tonnes Troll A 620,151 tonnes Lotte World Tower 680,389 tonnes Great Mosque of Mecca 771,107 tonnes

Weight ladder

How this item compares with its eight closest neighbours on a logarithmic scale.

635,029 tonnes
Pioneering Spirit 365,906 tonnes St. Peter’s Basilica 453,592 tonnes Burj Khalifa ≈500,000 tonnes Troll A 620,151 tonnes Pentagon This item 635,029 tonnes Hibernia 635,937 tonnes Lotte World Tower 680,389 tonnes Great Mosque of Mecca 771,107 tonnes Shanghai Tower 771,107 tonnes

Weight details

Typical 635,029 tonnes
Minimum 635,029 tonnes
Maximum 635,029 tonnes
Value type Exact
Weight reference text

The Pentagon includes 700,000 tons of sand from the nearby Potomac River.

Unit conversions

Kilograms635,029,318 kilograms
Pounds1,400,000,000 pounds
Metric tonnes635,029 tonnes
Grams635,029,318,000 grams
Ounces22,400,000,000 ounces
Stones100,000,000 stones

Source

1 sources
List of The 23 Heaviest Buildings in the World weightofstuff.com · Buildings & Structures · Section: 9.  The Pentagon · Article updated 2025-05-27
View source

More from the same article

These entries come from the same source articles, so you can keep exploring the original context.

Lotte World Tower 680,389 tonnes Great Mosque of Mecca 771,107 tonnes Shanghai Tower 771,107 tonnes Burj Khalifa ≈500,000 tonnes St. Peter’s Basilica 453,592 tonnes Taipei 101 ≈217,724 tonnes

Related content

Collections

Kiloton-scale giants

Related guides

How to read a weight range Why the same object can weigh different amounts

Same category

Hibernia 635,937 tonnes Troll A 620,151 tonnes Lotte World Tower 680,389 tonnes Great Mosque of Mecca 771,107 tonnes Shanghai Tower 771,107 tonnes Burj Khalifa ≈500,000 tonnes

Frequently asked questions

How much does Pentagon weigh?

Pentagon typically weighs about 635,029 tonnes, within a recorded range of 635,029 tonnes.

Where does Pentagon rank among Buildings & Structures?

It ranks #9 of 52 entries in Buildings & Structures, heavier than 100% of items in the dataset.

Where do these weight figures come from?

The data comes from 1 source articles on weightofstuff.com, most recently updated on 2025-05-27.

Dataset information

Items indexed <built-in method items of dict object at 0x7fb451acf040>
Source articles 430
Categories 11
Confidence Medium
Category Buildings & Structures
Category rank #9 of 52
Weight position Heavier than 100% of items
Updated 2025-05-27
Measurement type Mass
Dataset ID pentagon
URL slug pentagon

Confidence reflects how explicit the source wording is: exact values are high, ranges or approximations are medium, and vague statements are low.