Convert from gigagram to picogram

Unit Definition (gigagram)
An SI unit of mass equal to 10E9 grams, one million kilograms, or 1 kilotonne (1000 metric tons). This unit is used in scientific contexts, such as the measurement of atmospheric emissions. One gigagram equals about 2.2046 million pounds or 1102.3 U.S. (short) tons.

Unit Definition (picogram)
The picogram is a metric unit of mass equal to 10E-12 gram or one millionth of a microgram.