Gram conversions

Convert grams to

gram (SI unit of mass), pl. grams, abbr. g

The gram conversion selector on this page selects the mass/weight measurement unit to convert to starting from grams (g). To make a conversion starting from a unit of mass other than gram, simply click on the "Reset" button.

About gram

The gram is a unit of mass in the metric system equal to one thousandth of a kilogram (1 g = 0.001 kg), the base unit of mass in the International System of Units (SI).

One gram (g) is also equal to 1,000 milligrams (mg), or 106 micrograms (μg) or 109 nanograms (ng) (SI units of mass), or approximately 0.00220462 pounds (lb) or 0.03527396 ounces (oz), which are US customary / Imperial units of mass.

The base unit of mass in the SI is the kilogram. However, within the name or symbol of an SI unit of mass the SI prefixes are used in combination with "gram" and not "kilogram" which already has a prefix (kilo-) included in its name.

The gram is commonly used worldwide as a unit of mass / weight in technical and scientific publications, in healthcare settings, and for solid ingredients in grocery shopping and cooking.

Symbol: g

Plural: grams

Also known as: gramme (plural: grammes, traditional British-English spelling)

Subdivisions and multiples of the gram using SI prefixes

Subdivisions of the gram
Name Symbol Value
decigram dg 10-1 g
centigram cg 10-2 g
milligram mg 10-3 g
microgram μg 10-6 g
nanogram ng 10-9 g
picogram pg 10-12 g
femtogram fg 10-15 g
attogram ag 10-18 g
zeptogram zg 10-21 g
yoctogram yg 10-24 g
Multiples of the gram
Name Symbol Value
decagram dag 101 g
hectogram hg 102 g
kilogram kg 103 g
megagram Mg 106 g
gigagram Gg 109 g
teragram Tg 1012 g
petagram Pg 1015 g
exagram Eg 1018 g
zettagram Zg 1021 g
yottagram Yg 1024 g

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