There are various different culinary measures called a cup, but if filled with water they all give you between 1⁄5 and 1⁄4 of a kilogram. Actual cups-for-drinking-from can give wildly different amounts but a kilogram would correspond to a litre of water, and vessels that large usually have names other than “cup”.
😛 Dangit, my American intuition wasn’t good enough. I was kinda close, only a factor of 2 maybe.
There are various different culinary measures called a cup, but if filled with water they all give you between 1⁄5 and 1⁄4 of a kilogram. Actual cups-for-drinking-from can give wildly different amounts but a kilogram would correspond to a litre of water, and vessels that large usually have names other than “cup”.