More information from the unit converter
How many um in 1 kilometers? The answer is 1000000000. We assume you are converting between micrometre and kilometre. You can view more details on each measurement unit: um or kilometers The SI base unit for length is the metre. 1 metre is equal to 1000000 um, or 0.001 kilometers. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between micrometres and kilometres. Type in your own numbers in the form to convert the units!
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Common length conversions
um to polegada um to fingerbreadth um to hectometer um to twip um to mille um to yottameter um to yoctometer um to zeptometer um to kiloparsec um to arms-length
Definition: Micrometer
A micrometre (American spelling: micrometer, symbol µm) is an SI unit of length equal to one millionth of a metre, or about a tenth of the size of a droplet of mist or fog. It is also commonly known as a micron, although that term is officially outdated. It can be written in the expanded mathmatical notation (1×10-6 m)
The symbol µ is the "micro sign", which should look identical to the Greek letter mu (?) (the two may or may not look the same, depending on the font). The symbol "um" is sometimes used, when the µ and ? are not available, for example when using a typewriter.
The micrometre is a common unit of measurement for wavelengths of infrared radiation. Some people (especially in astronomy and the semiconductor business) use the old name micron and/or the solitary symbol µ (both of which were official between 1879 and 1967) to denote a micrometre. This practice persists in the face of official discouragement, perhaps to help disambiguate between the unit of measurement and the micrometer, a measuring device.
Definition: Kilometer
A kilometre (American spelling: kilometer, symbol: km) is a unit of length equal to 1000 metres (from the Greek words khilia = thousand and metro = count/measure). It is approximately equal to 0.621 miles, 1094 yards or 3281 feet.
Metric conversions and more
[BLOGURL] provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!
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