I think I saw a statistic somewhere that measured the Svalbard seed vault's contents in the TONS of seeds.
I think this link needs a big screen and a fast Internet pipe ... lots of 360-degree interactive imagery.
https://www.croptrust.org/what...
"Currently, the Vault holds more than 860,000 samples ..."
"The Seed Vault has the capacity to store 4.5 million varieties of crops."
" ... -18ÂșC ... sealed in custom made three-ply foil packages ..."