About 216,000 tonnes of gold have been mined in all of human history, on the World Gold Council’s estimate for 2024. That sounds like a mountain. It is not. Gold is so dense, 19.3 grams in every cubic centimetre, that the whole lot would fit in a cube about 22 metres on each side: a little shorter than a tennis court is long. Every ring, coin, bar and crown ever made, squeezed into one block you could stand beside in a city square.
The archive has few entries stranger than this one, so let us check the sums.
How much gold has ever been mined?
The World Gold Council keeps the count. Its estimate of above-ground stocks covers all the gold mined throughout history, whether it now sits in jewellery, in bars and coins or in central-bank reserves. For the end of 2024, that figure was about 216,000 tonnes (216,265 tonnes, to be exact), and the largest share of it is jewellery.
The count keeps growing, because mines keep producing. The Council’s most recent update, using data to the middle of 2026, puts the total at about 222,600 tonnes. So the cube in this story is a snapshot of 2024; the real one is quietly getting bigger.
Why it is so small: the density of gold
The secret is density. Gold, element 79, packs 19.3 grams into every cubic centimetre. A one-litre carton holds 1,000 cubic centimetres, so a one-litre carton of gold would weigh 19.3 kilograms. A cubic metre holds 1,000 litres, so a single cubic metre of gold weighs 19.3 tonnes.
Now divide the whole pile by that:
216,000 tonnes ÷ 19.3 tonnes per cubic metre ≈ 11,200 cubic metres
That is the volume of all the gold ever mined. To turn it into a cube, we need a side length whose cube (the number times itself, times itself again) gives 11,200. Try 22: 22 × 22 × 22 = 10,648, a shade too small. Try 23: 23 × 23 × 23 = 12,167, too big. The answer sits between them, just over 22, which is why the video settles on a cube about 22 metres on each side.
The newer 222,600-tonne figure barely changes the picture: the Council itself puts that cube at around 22.6 metres on each side.
The cube beside a tennis court
A tennis court is about 23.8 metres long. Set the cube down at one baseline and it stops a little short of the far one. Its height would be the same 22 metres. That is all of it: every civilisation’s treasure, in one block.
Gold has stranger habits than its weight. Why gold is yellow at all, why it never tarnishes, and why Einstein’s relativity is partly to blame, is the subject of why is gold gold?
Element 79. Gold.
