Main Page | See live article | Alphabetical index To help compare sizes of different surface areas, we list here areas of the order of 1020 square metres, i.e. those between 100 trillion km2 and 1 quadrillion km2. See also areas of other orders of magnitude. Areas smaller than 100 trillion km2 Areas larger than 1 quadrillion km2 See also: Orders of magnitude External link Conversion Calculator for Units of AREA This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.