Convert Grains To Grams

Please enter a value below to convert grains to grams:

In order to do a reverse conversion from grams to grains clear values in the above fields and input the value in the “Grams” field or go to grams to grains converter page.

Facts about Grain

Basic facts: A grain is an archaic unit of measurement of mass. In the avoirdupois, troy weight, and apothecaries’ system it is equivalent to precisely 64.79891 milligrams. Nominally it is based on the mass of a single ideal seed of a cereal.

This unit of measure was the legal foundation of traditional English weight systems and is the only unit that is equivalent throughout the avoirdupois, troy, and apothecaries’ systems of mass. The grain was based on the weight of a single grain of barley, assumed to be equivalent to 1+1/3 grains of wheat.

History: On the 1st of July 1959, since the implementation of the international yard and pound agreement of the grain or troy grain, which symbol is [gr], the measure has been defined in terms of units of mass in the International System of Units as exactly 64.79891 milligrams. One gram is therefore around 15.43236 grains.

Use: The grain is generally used to measure the mass of propellants and bullets. The grain is the standard unit used to weigh arrows in archery. In the US the hardness of water is often measured in grains per US gallon [gpg] of equivalents to calcium carbonate.

Facts about Gram

Basic facts: A gram is a unit of mass in the SI [International System of Units]. Its symbol is [g]. A kilogram is the base of the definition of a gram, where a gram is one-thousandth of a kilogram, the SI base unit of mass. The definition of the kilogram is no longer based on the international prototype since 2019. It is rather based on Planck’s constant, h, together with the new definitions of the second and the meter.

History: Initially, a gram was defined as the absolute weight of pure water in a cubic centimeter at the temperature of melting ice [later 4 °C]. Until the widespread adoption of SI, which uses kilograms as the base unit of mass, the gram used to be a fundamental unit of mass as part of centimeter-gram-second systems of units. Later, the gram was redefined as one-thousandth of a kilogram, the SI [meter-kilogram-second system of units] base unit of mass.

Use: In every life as well as scientific context, the gram is widely used. For instance, the gram is commonly used to measure non-liquid ingredients used for groceries or cooking. Standards often require the relative contents to be stated per 100 grams of the product on the nutrition labels of food products.

How many grams in a grain? 

1 grain is equivalent to 0.06479891 grams. Use 0.06479891 as the factor to convert grains to grams. Below find some popular grains to grams conversion questions:

• How many grams in 2 grains?  2 grains x 0.06479891 = 0.12959782 number grams
• How many grams in 3 grains?  3 grains x 0.06479891 = 0.19439673 number grams
• How many grams in 5 grains?  5 grains x 0.06479891 = 0.32399455 number grams
• How many grams in 10 grains? 10 grains x 0.06479891 = 0.6479891 number grams
• How many grams in 20 grains? 20 grains x 0.06479891 = 1.2959782 number grams
• How many grams in 50 grains? 50 grains x 0.06479891 = 3.2399455 number grams
• How many grams in 100 grains? 100 grains x 0.06479891 = 6.479891 number grams
• How many grams in 1000 grains? 1000 grains x 0.06479891 = 64.79891 number grams

Grains to Grams Conversion Chart