How big is 1000000 grains of salt?

One million grains of salt weigh approximately 1 kilogram (about 2.2 pounds) and can occupy a volume of around 0.5 to 1 liter, depending on the size of the grains. If you visualize it, this amount of salt would fill a small container, roughly comparable to a medium-sized jar or a cup. The actual space it occupies can vary based on the grain size and how densely they are packed.