Arrobas (Brazilian) to Pounds (@ to lb)

1 arroba (Brazilian) equals 33.06933933 pounds (rounded).

1 arroba (Brazilian) = 33.06933933 pounds

How to convert arrobas (Brazilian) to pounds

To convert arrobas (Brazilian) to pounds, multiply the number of arrobas (Brazilian) by 33.06933933. The factor is rounded to 10 significant digits. To go the other way, multiply pounds by 0.03023949133 (rounded).

pounds = arrobas (Brazilian) × 33.06933933

Example: 10 arrobas (Brazilian) = 330.6933933 pounds.

About these units

Arroba (Brazilian) (@)

Spanish & PortugueseTraditional unit (still used in some regions)

Exactly 15 kg. Used in Brazil for the weight of cattle and cotton.

Arabic ar-rubʿ, a quarter, is the root of arroba, which was a fourth of a quintal in the Iberian trade world. Portugal carried the unit to Brazil, and in Portugal the arroba was about 14.7 kilograms, while parts of Spain such as Galicia, Aragon and Andalusia used about 11.5.

Brazil's modern metric arroba is 15 kilograms, the figure used here, and the agricultural sector still relies on it, mainly for cattle and cotton. Elsewhere in Latin America the value differs: 12.5 kilograms in Colombia, Ecuador and Peru, while Bolivia's national arroba is a volume of 30.46 liters. Because the symbol @ is also the word arroba in Spanish and Portuguese, the same sign serves as the email at-sign in those languages.

1 arroba (Brazilian) = 15 kilograms (exactly).

Sources: Wikipedia: Arroba

Pound (lb)

US & ImperialCurrent unit

Exactly 0.45359237 kg, divided into 16 ounces. The standard unit of weight in the US and common in the UK.

Why is pound abbreviated lb? The answer is Roman. The English word comes from the Latin libra pondo, roughly the weight measured in libra, and the symbol keeps the first word. The Roman libra was divided into 12 unciae. The avoirdupois pound of 16 ounces came into general use around 1300 and was initially equal to 6,992 troy grains; under Elizabeth I it was redefined as 7,000 grains. The UK's Weights and Measures Act 1878 set the imperial standard pound as a platinum cylinder, and the troy pound was abolished for trade the following year.

Today the pound is defined from the kilogram. The International Yard and Pound Agreement of 1959 fixed it at exactly 0.45359237 kg, and the UK's Weights and Measures Act 1963 wrote the same figure into law. Pounds remain the everyday unit for body weight, groceries and shipping in the United States and are widely used in the UK. The word also survives in odd places: a six-pounder cannon was named for the weight of its shot, not its own.

1 pound = 0.45359237 kilograms (exactly).

Sources: Wikipedia: Pound (mass); NIST Guide to the SI, Appendix B.8 (mass conversions)

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