Convert Gigagram (Gg) to Ton (Assay) (US) (AT (US)) instantly.
About these units
Gigagram (Gg)
A gigagram equals 1,000 megagrams, or one million kilograms. It is used in industrial-scale output, national food production statistics, and environmental assessments, such as annual emissions of pollutants. Governments and researchers analyzing natural resource consumption, waste management, or ecological footprints frequently rely on gigagram-level reporting. The Gg sits at the intersection of human-scale systems and planetary-scale studies, offering clarity for large quantities.
Ton (Assay) (US) (AT (US))
The US assay ton is a specialized unit used in mining and metallurgy for evaluating ore grades. It is defined as 29.166⅔ grams, a very small mass chosen to simplify calculations relating assay results to tons of ore. The idea is that if an assay ton of sample yields 1 milligram of precious metal, then one actual ton of ore contains 1 ounce of that metal. This scaling makes laboratory results directly translatable to mining yields. While obsolete in modern industrial practice, where metric units dominate, the assay ton remains important in historical mining records and for researchers studying early industrial metallurgy.