Yes.
A gram is part of the metric system. It is the unit of measure for weight.
No, feet are not part of the metric system.
Kg (kilogram) is the standard - although it is not a standard of weight, but of mass. The kilogram is used world-wide as the standard of mass. It is part of the SI (the International System of units).
Inches are part of the English system and centimeters are part of the metric system.
A kilogram measures the mass of an object(SI). If you are looking for the SI unit of volume, it is liters, or kiloliters.
The milligram is part of the SI system of measurements, it represents 1/1000 of a gram. One gram is the weight of one milliliter of pure water at 4 C. So the answer is no. The metric system is international, not US.
Centimetres are part of the metric system. A centimetre is 0.01 metre.
A pound is part of the imperial system of measurements, which were used in England, and elsewhere, before the introduction of metric measurements.
Imperial and metric
It already is part of the metric system
Those are typical units in the metric system; the most recent version of the metric system is called the SI. Liter is a derived unit (equal to a cubic decimeter), but it can still be considered part of the SI.Those are typical units in the metric system; the most recent version of the metric system is called the SI. Liter is a derived unit (equal to a cubic decimeter), but it can still be considered part of the SI.Those are typical units in the metric system; the most recent version of the metric system is called the SI. Liter is a derived unit (equal to a cubic decimeter), but it can still be considered part of the SI.Those are typical units in the metric system; the most recent version of the metric system is called the SI. Liter is a derived unit (equal to a cubic decimeter), but it can still be considered part of the SI.