A kilogram is a unit of mass in the metric system, commonly used around the world. It is defined as the mass of a specific platinum-iridium cylinder kept in France. One kilogram is equal to 1,000 grams, making it a convenient measure for everyday items like food and household goods. In daily life, we often encounter kilograms when weighing fruits, vegetables, or even ourselves. For example, a typical bag of sugar weighs about one kilogram. Understanding kilograms helps us compare weights easily and is essential for cooking, shopping, and many scientific applications.