# gram

Gram
Unit signg
MeasureMass
Base UnitKilogram
Multiple of Base10−3
SystemSI, CGS, other
Common usageCommonly used in cooking and food labeling
Examples
One millilitre of water is 1 g at 4 °C.
Typical coins: a euro is 7.5 g and a US penny is 2.5 g
Conversion
SI10 dg= 1 g = 0.1 dag = 0.001 kg
Imperial1 g ≈ 0.0353 ounce ≈ 0.00220 pound
Next units
decigram<Gram<decagram
BIC pen cap, about 1 gram.

For other uses of the words gram or gramme, see gram (disambiguation).

The gram or gramme (Greek/Latin root grámma); symbol g, is a unit of mass.

Originally defined as "the absolute weight of a volume of pure water equal to the cube of the hundredth part of a metre, and at the temperature of melting ice"[1] (later 4 °C), a gram is now defined as one one-thousandth of the SI base unit, the kilogram, or 1×10−3 kg, which itself is defined as being equal to the mass of a physical prototype preserved by the International Bureau of Weights and Measures.

## Examples

All masses are approximate:
• Plastic pen cap (Bic): 1 gram
• A single Smartie: 1 gram
• Paper clip: 0.5 grams to 1.5 grams
• 1 US banknote (any denomination): 1 gram[2]
• 1 Litre of air: 1.2 grams
• A teaspoon of salt: 4.745 grams
• Typical sheet of A4 paper: 5 grams
• United States nickel: 5 grams (very accurate when new)[3]

## Other abbreviations

The International System of Units abbreviation for the gram is g, and follows the numeric value with a space, as in "200 g"[4][5]. In some fields and regions, the international standard symbols for units are used quite strictly, in particular in technical and scientific publications and in legally regulated product labels. In other contexts (e.g., grocery market traders), a wide range of other abbreviations can also be encountered, such as gr, gm, grm, gms, grms.

## History

It was the base unit of mass in the original French metric system and the later centimetre-gram-second (CGS) system of units. The word originates from late Latin gramma – a small weight.

## Uses

The gram is today the most widely used unit of measurement for non-liquid ingredients in cooking and grocery shopping worldwide. For food products that are typically sold in quantities far less than 1 kg, the unit price is normally given per 100 g.

Most standards and legal requirements for nutrition labels on food products require relative contents to be stated per 100 g of the product, such that the resulting figure can also be read as a percentage.

## Conversion factors

• 1 grain = 0.06479891 gram
• 1 ounce (avoirdupois) = 28.349523125 grams
• 1 ounce (troy) = 31.1034768 grams

## References

Mass is a fundamental concept in physics, roughly corresponding to the intuitive idea of "how much matter there is in an object". Mass is a central concept of classical mechanics and related subjects, and there are several definitions of mass within the framework of relativistic
kilogram or kilogramme (symbol: kg) is the SI base unit of mass. The kilogram is defined as being equal to the mass of the International Prototype Kilogram (IPK), which is almost exactly equal to the mass of one liter of water.
Si, si, or SI may refer to (all SI unless otherwise stated):

In language:
• One of two Italian words:
• (accented) for "yes"
• si

centimetre-gram-second system (CGS) is a system of physical units. It is always the same for mechanical units, but there are several variants of electric additions. It was replaced by the MKS, or metre-kilogram-second system, which in turn was replaced by the International
The litre or liter (see spelling differences) is a unit of volume. There are two official symbols, namely the Latin letter L both in lower and upper case: l and L.
Water is a common chemical substance that is essential to all known forms of life.[1] In typical usage, water refers only to its liquid form or state, but the substance also has a solid state, ice, and a gaseous state, water vapor.
The euro (EUR or ) is the currency of 13 European Union (EU) member states (Austria, Belgium, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, Netherlands, Portugal, Slovenia, and Spain), three European microstates which have currency agreements
The United States one-cent coin is a unit of currency equaling one-hundredth of a United States dollar. Its obverse has featured the profile of President Abraham Lincoln since 1909, the centennial of his birth.
Si, si, or SI may refer to (all SI unless otherwise stated):

In language:
• One of two Italian words:
• (accented) for "yes"
• si

kilogram or kilogramme (symbol: kg) is the SI base unit of mass. The kilogram is defined as being equal to the mass of the International Prototype Kilogram (IPK), which is almost exactly equal to the mass of one liter of water.
kilogram or kilogramme (symbol: kg) is the SI base unit of mass. The kilogram is defined as being equal to the mass of the International Prototype Kilogram (IPK), which is almost exactly equal to the mass of one liter of water.
kilogram or kilogramme (symbol: kg) is the SI base unit of mass. The kilogram is defined as being equal to the mass of the International Prototype Kilogram (IPK), which is almost exactly equal to the mass of one liter of water.
Imperial units or the Imperial system is a collection of units, first defined in the British Weights and Measures Act of 1824, later refined (until 1959) and reduced.
ounce (abbreviation: oz) is the name of a unit of mass in a number of different systems, including various systems of mass that form part of English units, Imperial units, and United States customary units. Its size can vary from system to system.
pound or pound-mass (abbreviations: lb, , lbm, or sometimes in the United States: #) is a unit of mass (sometimes called 'weight' in everyday parlance) in a number of different systems, including English units, Imperial units, and United
To help compare different orders of magnitude, the following list describes various mass levels between 10−36 kg and 1053 kg.

Factor (kg) Value Item
10−36 1.
kilogram or kilogramme (symbol: kg) is the SI base unit of mass. The kilogram is defined as being equal to the mass of the International Prototype Kilogram (IPK), which is almost exactly equal to the mass of one liter of water.
kilogram or kilogramme (symbol: kg) is the SI base unit of mass. The kilogram is defined as being equal to the mass of the International Prototype Kilogram (IPK), which is almost exactly equal to the mass of one liter of water.
Gram may refer to:

In science and technology:
• Gram, a unit of measurement of mass
• Gram-force, see kilogram-force
• Gram staining, a method of distinguishing bacteria, and the Gram-positive and Gram-negative results of this

units of measurement have played a crucial role in human endeavour from early ages up to this day. Disparate systems of measurement used to be very common. Now there is a global standard, the International System (SI) of units, the modern form of the metric system.
Mass is a fundamental concept in physics, roughly corresponding to the intuitive idea of "how much matter there is in an object". Mass is a central concept of classical mechanics and related subjects, and there are several definitions of mass within the framework of relativistic
Water is a common chemical substance that is essential to all known forms of life.[1] In typical usage, water refers only to its liquid form or state, but the substance also has a solid state, ice, and a gaseous state, water vapor.
1 metre =
SI units
1000 mm 0 cm
US customary / Imperial units
0 ft 0 in
The metre or meter[1](symbol: m) is the fundamental unit of length in the International System of Units (SI).
Si, si, or SI may refer to (all SI unless otherwise stated):

In language:
• One of two Italian words:
• (accented) for "yes"
• si

kilogram or kilogramme (symbol: kg) is the SI base unit of mass. The kilogram is defined as being equal to the mass of the International Prototype Kilogram (IPK), which is almost exactly equal to the mass of one liter of water.
Scientific notation, also known as standard form, is a notation for writing numbers that is often used by scientists and mathematicians to make it easier to write large and small numbers.
The International Bureau of Weights and Measures is the English translation of the name of the Bureau international des poids et mesures (BIPM), a standards organisation, one of the three organisations established to maintain the International System of Units (SI)
Nestlé Smarties are a colourful sugar-coated chocolate confectionery popular in Europe and the Commonwealth of Nations. They were first introduced in 1937.

They are not distributed in the United States, where another type of confectionery uses the "Smarties" name, except by