Grain, unit of weight equal to 0.065 gram, or 1/7,000 pound avoirdupois. One of the earliest units of common measure and the smallest,

A unit of measurement of weight and mass in the metric system. In weight, a gram is equal to a thousandth of a kilogram.

Kilogram (kg), basic unit of mass in the metric system. A kilogram is very nearly equal to the mass of 1,000 cubic cm of water.

a unit of mass or weight equal to one thousandth of a gram, and equivalent to 0.0154 grain.

Ounce, unit of weight in the avoirdupois system, equal to 1/16 pound (437 1/2 grains), and in the troy and apothecaries' systems, equal to 480 grains, or 1/12 pound.

a unit of 24 grains or 1/20 of an ounce (1.56 grams).

Pound, unit of avoirdupois weight, equal to 16 ounces, 7,000 grains, or 0.45359237 kg, and of troy and apothecaries' weight, equal to 12 ounces, 5,760 grains, or 0.3732417216 kg.

Stone, British unit of weight for dry products generally equivalent to 14 pounds avoirdupois (6.35 kg), though it varied from 4 to 32 pounds (1.814 to 14.515 kg) for various items over time.

A long ton, also called the weight ton (W/T), imperial ton, or displacement ton, is equal to: 2,240 pounds or 1,016 kilograms or 1.016 metric tons.

metric is a unit of mass equal to 1,000 kilograms.

Ton, unit of weight in the avoirdupois system equal to 2,000 pounds (907.18 kg) in the United States (the short ton) and 2,240 pounds (1,016.05 kg) in Britain (the long ton).

The troy ounce is a metric used in weighing precious metals. The troy ounce is the equivalent of 31.1034768 grams, whereas the ounce is the equivalent of 28.349 grams.

A troy pound (abbreviated lb t) is equal to 12 troy ounces and to 5,760 grains, that is exactly 373.2417216 grams.