Convert Tonne to Gram

FromTonne (t)

ToGram (g)

Tonne

The tonne (t) is a unit of mass equal to 1,000 kilograms (1,000 kg) or 1 megagram (1 Mg). It is part of the metric system but is not an SI unit. However, it is accepted for use with the SI due to its widespread application in measuring large masses, such as in industry and transportation.

Origin:

The tonne was introduced in the 1790s during the creation of the metric system in France. It was established as a convenient way to represent large quantities of mass, aligning with the decimal-based nature of the system. The term "tonne" is derived from the Old French word "tonne", meaning a large cask or barrel, reflecting its use in measuring heavy loads. Over time, it became a standardized unit used globally in fields like shipping, agriculture, and environmental science.

Gram

The gram (g) is a unit of mass in the metric system, and it is equal to one-thousandth of a kilogram (0.001 kg). Since the kilogram is the SI base unit of mass defined by the Planck constant (h), the gram is indirectly defined by the same constant. This modern definition ensures the gram's precision and stability as part of the International System of Units (SI).

Origin:

The gram was introduced in 1795 during the French Revolution as part of the metric system's creation. Originally, it was defined as the mass of one cubic centimeter of pure water at its maximum density (approximately 4°C). This practical link to water made it a convenient and universal reference. The gram served as a base unit of mass in early metric systems, but in 1889, the kilogram was adopted as the primary standard, making the gram a derived unit equal to one-thousandth of a kilogram.