Analysis:

1t= 1000 kg;

1kg= 1000g；

1000kg= 1000000g；

1t= 1000000g

Gram (g) is a unit of mass, one thousandth of a kilogram (kg), and one gram is the mass of18×140744812 atoms.

Extended data:

The mass of an international kilogram prototype (cylinder) made of platinum-iridium alloy with a bottom diameter of 39 mm and a height of 39 mm is specified as 1 kg. It is currently kept in the International Bureau of Metrology in Paris, France.

Unit conversion

1 kg = 0.00 1 ton

1 kg =11,000 g

1 kg = 1,000,000 mg

1 kg = 1,000,000,000 micrograms

Kela was first used by ancient Arabs. It is not a special unit of measurement, but a fruit called carob. One of the characteristics of this kind of fruit is that the weight of each fruit is roughly equal.

Ancient Arabia produced many kinds of precious stones, but at that time, weighing instruments such as scales were not invented, which brought a lot of inconvenience to the commodity trade of ancient Arabs. In order to solve this problem, some people proposed to use the fruit of carob as the unit for calculating precious stones, which was supported by people. Gradually, using "carat" as the unit for measuring stone was fixed, and it was widely adopted by all countries in the world.