Grains Conversion

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Unit of:


Weight (in non-scientific affairs)

Wordwide use:

Grains, a unit of measurement commonly used in the field of mass and weight, have a long-standing history and worldwide use. The use of grains as a unit of measurement is particularly prevalent in the United States.


The grain is a unit of measurement commonly used in the field of mass or weight. It is primarily used in the United States and is derived from the traditional system of weights and measures. The grain is defined as 1/7000th of a pound, or approximately 64.79891 milligrams. It is denoted by the symbol "gr" or "gn".

Origin of grain as a weight measurement:

The origin of the grain as a weight measurement can be traced back to ancient civilizations, particularly in the Middle East. The grain was originally used to measure small quantities of food, such as grains of wheat or barley. It was a convenient unit of measurement due to its small size and the fact that grains were commonly used as a form of currency.

The grain as a weight measurement was standardized over time, with different regions adopting slightly different values. However, the most commonly accepted value for a grain is approximately 64.79891 milligrams. This value is based on the weight of a single grain of wheat or barley.

Common references:

Usage context:

The grain is commonly used in the measurement of small quantities, particularly in the pharmaceutical and jewelry industries. It is often used to measure the weight of medications, such as tablets or capsules, where precision is crucial. Additionally, grains are frequently employed in the measurement of precious metals, such as gold or silver, as they allow for accurate and precise calculations of their weight.

In the pharmaceutical industry, grains are commonly used to measure the weight of active ingredients in medications. This is especially important when dealing with potent substances, where even a slight variation in dosage can have significant effects on a patient's health. The use of grains ensures that medications are accurately formulated and administered, providing the desired therapeutic effect.

In the jewelry industry, grains are utilized to measure the weight of gemstones and precious metals. This is particularly important when determining the value and quality of these materials. Jewelers rely on precise measurements to assess the worth of gemstones and to ensure that they are accurately priced and sold.


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