B1 is exactly 1 meter tall.

Do you call ISO216 metric in the US? Where I’m from in Europe we just call it ISO/OSI or DIN standard format

	▲	jedberg 3 hours ago \| parent [-]
		Most people in the US aren't aware that everyone else uses a different size of paper. Heck, most people in the US aren't even aware that there are names for the sizes of paper we do use.