Main Page | See live article | Alphabetical index To help compare different orders of magnitude we list here masses between 1012 kilograms (1 gigatonne) and 1013 kilograms (10 gigatonnes). See also masses of other orders of magnitude. Lighter masses 3.91 × 1012 kg (3,910,000,000 tons) -- world oil production in 2001 Heavier masses See also: Orders of magnitude, conversion of units External link Conversion Calculator for Units of MASS (& Weight) - (requires JavaScript) This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.