Definition of Kilogram

What is a Kilogram?

A kilogram is a unit of measurement that is used to measure the weight or mass of an object. It is abbreviated as kg. The kilogram is part of the metric system, which is a system of measurement used all around the world.

Origin of the Kilogram

The kilogram was first defined in 1799 by a group of scientists who wanted to create a standard unit of weight. They decided to use a small metal cylinder made of platinum and iridium as the standard. This cylinder, called the International Prototype of the Kilogram, is kept in a special vault in France.

Everyday Life

You can find the kilogram being used in everyday life in many different ways. When you go to the grocery store to buy fruits or vegetables, the weight of the produce is often measured in kilograms. The kilogram is also used in industries to measure the weight of materials, like in factories or shipping companies.

Synonyms and Comparisons

The kilogram is similar to the pound, which is another unit of weight. However, the kilogram is used in most parts of the world, while the pound is mainly used in the United States.


In conclusion, a kilogram is a unit of measurement used to measure weight or mass. It was defined using a metal cylinder and is used in various aspects of everyday life. The kilogram is an important unit that helps us measure and compare the weight of objects accurately.