The Scale of Gold

Methodology & sources

Every cube on these pages is computed, not drawn by eye. The point of the exercise is that gold’s value is immense and its volume is tiny — so the numbers have to be honest for the surprise to land. Here is exactly how each figure is derived.

From tonnes to a cube

Gold has a density of 19.32 g/cm³ (19,320 kg/m³) — about two and a half times that of iron (7.87 g/cm³). A given mass therefore occupies a fixed volume, and a solid cube of that volume has a fixed edge length:

So all the gold ever mined — about 213,000 tonnes — is 11,025 m³, a cube about 22 m on a side. Every national cube is computed the same way: the United States’ 8,133 t becomes a 7.5 m cube; all central-bank gold (36,535.4 t) a 12 m cube.

Where the tonnages come from

• National reserves. Official-sector holdings from the World Gold Council · IMF IFS dataset, as of May 2026. The same figures power our gold-reserves cluster. The world official total is 36,535.4 t.
• All the gold ever mined. The World Gold Council’s above-ground-stocks estimate (~213,000 t). This is an estimate, not a count — historical production before the modern era is inherently uncertain — and it grows by roughly 3,500 t a year.
• The smaller landmarks — a troy ounce, a kilo bar, the 400-oz Good Delivery bar, a pallet — are exact by definition (a Good Delivery bar is 400 troy ounces; a tonne is 32,150.7 troy ounces).

Dollar values

Every “≈” value uses a single reference spot price of $4,200/oz, baked in June 2026, with 1 tonne = 32,150.7 troy ounces. Gold moves daily, so treat these as order-of-magnitude figures; the live price lives on our spot-price page, and you can run any sum on the gold calculator.

The drawings & comparisons

Cubes are rendered as simple isometric blocks and drawn to scale within each frame, with a 1.7 m human (and, for building-scale cubes, an 8 m house) as the reference. The reference figures are deliberately plain silhouettes, not exact architecture. Storey counts assume ~3 m per floor; “Olympic pool” = 2,500 m³; “shipping container” = a 40-ft box (~68 m³); “family home” ≈ 500 m³. These are vivid approximations to make the volume legible, not engineering claims.

What this is not

A nation’s gold is rarely a single block — it sits in bars across vaults, and some is on loan or swapped. The cube is a thought experiment about volume, not a claim about how the metal is stored. None of this is investment advice; it’s a way to feel a number that’s otherwise impossible to picture.