gram

Also known as g, gm, gramme, grams

The gram (originally gramme; SI unit symbol g) is a unit of mass in the International System of Units (SI) equal to one thousandth of a kilogram.

AI overview

The gram is a unit of measurement used to describe how heavy something is, and it's equal to one thousandth of a kilogram. It matters because it's the standard unit for measuring mass that scientists and people around the world use, making it easy to communicate measurements consistently.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Unit.name: gram
Unit.image: 300px
Unit.caption: The mass of this Japanese one yen coin is 1.00 gram. A weight scale such as this can give an accurate reading of mass for many objects (see Weight vs. mass).
Unit.standard: SI
Unit.quantity: Mass
Unit.symbol: g
Unit.units1: SI base units
Unit.inunits1: 10−3 kilograms
Unit.units2: Imperial unitsU.S. customary
Unit.units3: daltons

via Wikipedia infobox

~4 min read

Encyclopedic overview

8 sections

Contents

Official SI symbol
History
Uses
Conversion factors
Comparisons
See also
Notes
References

The gram (originally gramme; SI unit symbol g) is a unit of mass in the International System of Units (SI) equal to one thousandth of a kilogram.

Originally defined in 1795 as "the absolute weight of a volume of pure water equal to the cube of the hundredth part of a metre [1 cm3], and at the temperature of melting ice", the defining temperature (0 °C) was later changed to the temperature of maximum density of water (approximately 4 °C). Subsequent redefinitions agree with this original definition to within 30 parts per million (0.003%), with the maximum density of water remaining very close to 1 g/cm3, as shown by modern measurements.

Excerpted from Wikipedia’s “gram” article, available under the CC BY-SA 4.0 licence.