What are some good scale conversion calculators?

An effective scale conversion calculator is available at the Bureau of Economic Geology website, where the calculator converts to both metric and imperial units. Alternatively, a great scale conversion calculator can be found at the Scale Models website.

Map scales proportion the distance on the ground with a representative distance on a map. For example, a map scale of 1:100,000 means that one unit on the map is the equivalent to a section on the ground 100,000 units long. Map scales can be increased or decreased, in that 0.1:100,000 is the equivalent scale of 1:1,000,000. These representative scales are unit-less.