Convert Drop (drop) to Gigaliter (GL) instantly.
About these units
Drop (drop)
The drop is one of the oldest fluid measures and originally referred simply to the amount of liquid that naturally forms at the end of a dripping vessel. Because drop size depends on viscosity, surface tension, temperature, and orifice size, early medicine found drops inconsistent and unreliable. Modern medicine and chemistry sometimes define a drop as 0.05 mL, but this is only a convention used for standardized droppers—real drops can vary significantly. Despite its imprecision, the drop survives in everyday language, aromatherapy, essential oils, and household instructions ("add a few drops"). It exemplifies humanity's earliest attempts to quantify small volumes before scientific instrumentation enabled precise micro-measurement.
Gigaliter (GL)
A gigaliter equals one billion liters or one million cubic meters. It is widely used when discussing very large natural or artificial water systems. Countries quantify national water reserves, lake capacities, and large-scale water transfers in gigaliters. For example, major reservoirs, such as those used for hydroelectric power generation, often have volumes in the tens of gigaliters. Environmental scientists use GL to describe groundwater extraction, rainfall totals across large regions, and freshwater availability. The GL helps quantify planetary-scale hydrological processes in a manageable numerical range.