Tonne: The tonne, also known as the metric ton, is a unit of mass in the metric system. It is equal to 1,000 kilograms or 1,000,000 grams. It is widely used internationally for measuring larger quantities of mass and is equivalent to approximately 2,204.62 pounds.
A microgram (µg or mcg) is a metric unit of mass or weight in the International System of Units (SI). It represents one millionth of a gram or 10^-6 grams. The metric system is a decimal-based system of measurement used worldwide, and it provides a convenient way to express both large and small quantities of mass.
To provide context for the size of a microgram:
Micrograms are commonly used in scientific and medical contexts, especially when dealing with substances or quantities that are very small. For example: