And then I find myself checking the packaging of a frozen pizza (please don't judge me). There is a small plastic window on the front and I can tell that there

And then I find myself checking the packaging of a frozen pizza (please don't judge me). There is a small plastic window on the front and I can tell that there is a pizza inside and from tipping it I can tell that the pizza is smaller than the box. The label says that the pizza is 500g (20 oz) which is totally useless to me because I can't remember if the box said 500, 550, or 600g when I bought it 3 months ago.