Rangdom

Convert a length into every unit at once

Enter one value and a unit — millimeters, centimeters, meters, kilometers, inches, feet, yards, or miles — and read it back in every unit at once. Each input is reduced to a canonical value in meters using exact factors (1 in = 2.54 cm, 1 mi = 1609.344 m), then every output is derived from that base. Decimals are supported, but a length cannot be negative.