Stones to Apothecaries’ Dram calculator

Stones

A depiction of a medieval German scale weighing bales of wool according to the local stone.

Source: Wikipedia

Apothecaries’ Dram

Dram is a unit of mass in the avoirdupois system, and both a unit of mass and a unit of volume in the apothecaries' system. It was originally both a coin and a weight in ancient Greece.

Source: Wikipedia

Stones to Apothecaries’ Dram Conversion Table

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• Stone (6,350.29 grams)

  The stone or stone weight (abbreviation: st.) is an English and imperial unit of mass now equal to 14 pounds (6.35029318 kg). England and other Germanic-speaking countries of northern Europe formerly used various standardised "stones" for trade, with their values ranging from about 5 to 40 local pounds (roughly 3 to 15 kg) depending on the location and objects weighed. The United Kingdom's imperial system adopted the wool stone of 14 pounds in 1835. With the advent of metrication, Europe's various "stones" were superseded by or adapted to the kilogram from the mid-19th century on. The stone continues in customary use in Britain and Ireland used for measuring body weight, but was prohibited for commercial use in the UK by the Weights and Measures Act of 1985.

• Dram (3.888 grams)

  The apothecaries' system or apothecaries' weights and measures is a historical system of mass and volume units that were used by physicians and apothecaries for medical recipes, and also sometimes by scientists. Dram, unit of weight in the apothecaries’ and avoirdupois systems. An apothecaries’ dram contains 3 scruples (3.888 grams) of 20 grains each and is equal to one-eighth apothecaries’ ounce of 480 grains.