Use whatever is common in your country. In the long term, however, the entire world should switch to metric, for reasons of standardization, so if you happen to live in a country that uses non-metric units, you might try to push for metrification.
It is a metric measure of weight which amounts to 1,000 grams.
I think by customary you mean imperial
The end of the word tells you that this is a metric unit.
It is metric.
It is a metric unit.
It is in the metric system.
Metric
Fahrenheit is a customary unit
What is the metric unit of a orange? What is the metric unit of a pencil? What iw the customary unit amount of water a bathtub will hold?
kg for kilogram
1 tonne, or 1 metric ton.
One metric ton is equal to 1000 kilograms. Therefore a metric ton is 1000 times larger than a kilogram.
It can be more or less. An once (customary) is bigger than a gram (metric) but a pound (customary) is smaller than a kilogram (metric).
In the SI system (metric), length is a meter, mass is the kilogram, and time is the second.
It is a customary unit.
The opposing systems are imperial and metric, not customary. But, meters are metric.
The pound is NOT a metric unit.
It is customary.
Metric.
Metric
Metric.
customary
It is a customary unit.
A "gran" is a German measurement, it is neither customary or metric. A "gram" is a metric unit.