A barrel of land (Danish: tønde land,[1] Norwegian: tønneland,[2] Swedish: tunnland,[3] Finnish: tynnyrinala) is a Scandinavian unit of area. The word may originate from the area of fields one could seed with a barrel of grain seeds.[1] The acre is the equivalent Anglo-Saxon unit. Because the barrel sizes varied by country, the area unit does too. One barrel can be approximated as half a hectare.