To help compare different orders of magnitude, this page lists lengths between 10^-5 m and 10^-4 m (10 µm and 100 µm).

A length of 100 kilometers (about 62 English miles), as a rough amount, is relatively common in measurements on Earth and for some astronomical objects. It is the altitude at which the FAI defines spaceflight to begin. To help compare orders of magnitude, this page lists lengths between 100 and 1,000 kilometres (10⁵ and 10⁶ metres).