How many grams of sand is in the world?
Adding up the sand from all the beaches and deserts in the world, the Earth has approximately (and this is very rough estimate) 7.5 times 10 to power of 18 grains of sand, or in another words, seven quintillion, five hundred quadrillion grains.
The Earth has roughly 7.5 x 1018 grains of sand, or seven quintillion, five hundred quadrillion grains. That's a lot of grains.
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