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.
Fahrenheit is a customary unit
1 tonne, or 1 metric ton.
kg for kilogram
One metric ton is equal to 1000 kilograms. Therefore a metric ton is 1000 times larger than a kilogram.
In the metric system, the gram (g) is the named unit in the metric system which takes the various suffixes to measure larger or smaller amounts. However, the basic unit of mass in the SI system is the kilogram (1000g) which is used to define the size of a gram.
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
A "gran" is a German measurement, it is neither customary or metric. A "gram" is a metric unit.
customary
It is a customary unit.