Definition
Gram
A gram is a metric unit of mass equal to one thousandth of a kilogram.
What it means
Use grams for the mass of light objects or small amounts. The number tells how many gram-sized units of mass there are.
Remember it
A thousand grams click together to make one kilogram.
Example
Four packets each have a mass of 250 g. Their total mass is 4 × 250 g = 1000 g = 1 kg.
Watch for
In measurement, gram names mass; weight is a different quantity.
Common mix-up
The symbol g is lowercase; G is not the gram symbol.
Exact meaning
Written with the symbol g, a gram names exactly 0.001 kilogram of mass. A group of 1000 grams is 1 kilogram.