Convert Hectogram (hg) to Kilogram (kg) instantly.
About these units
Hectogram (hg)
A hectogram equals 100 grams and is common in food markets in Italy, Greece, and parts of Latin America. Consumers often purchase cheese, cold cuts, or dry goods in hectograms because it provides a comfortable scale—neither too large nor too small. In scientific contexts, hectograms sometimes appear in hydrology, meteorology, or soil science, where medium quantities are more intuitively expressed using this unit. Though overshadowed globally by the kilogram, the hectogram survives where cultural habits align with metric logic.
Kilogram (kg)
The kilogram is the base unit of mass in the SI system and the only SI unit defined directly by a fundamental constant rather than a physical object. Originally, its definition was tied to a platinum–iridium artifact stored in France—the famous "International Prototype Kilogram." Over time, tiny mass changes in the prototype and its official copies created difficulties for high-precision science. In 2019, the kilogram was redefined using Planck's constant, linking mass to the laws of quantum physics through the Kibble balance. This innovation ensures universality, stability, and reproducibility across the world. The kilogram is central to commerce, science, engineering, and every quantitative field dealing with matter. Its decimal relationships with other metric units (grams, milligrams, tons) make it universally convenient. From groceries to spacecraft mass budgets, the kilogram anchors modern mass measurement.