Avoirdupois weights: oz to lb

1. Units and Conversion 1.2) Weight 1.2.1) Avoirdupois and SI

1.2.1.1) Avoirdupois only Easy 1


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The weight of a drug excipient shows 65 oz. Express it in lb.


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lb equals 4.06 kg

    Answer: 4.0625 lb.
    • We know that, in the Avoirdupois measures of weight:

      1 pound (lb) = 16 ounces (oz) = 7000 grains (gr)

    • Meaning, 1 oz = 1/16 lb
    • Therefore, 65 oz = 65/16 = 4.0625 lb