One arroba (liquid measure) was equal to 4.263 gallons. The modern metric arroba used in these countries in everyday life is defined as . One arroba was equal to 16.137 l. One cuartillo was equal to 1.111 l. 32 cuartillo were equal to one arroba. It is operated by Radiorama and carries its Arroba FM pop format. In Peru the arroba is equivalent to . It is owned by Radiorama and carries its Arroba FM (@FM) pop format. Currently, the word "arroba" means both the at-symbol and a unit of weight. Arroba was a Portuguese and Spanish custom unit of weight, mass or volume.