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How many mm in 1 light-minute? The answer is 17987547480000. We assume you are converting between millimetre and light minute. You can view more details on each measurement unit: mm or light-minute The SI base unit for length is the metre. 1 metre is equal to 1000 mm, or 5.5594015866359E-11 light-minute. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between millimetres and light minutes. Type in your own numbers in the form to convert the units!
You can do the reverse unit conversion from light-minute to mm, or enter any two units below:
A millimetre (American spelling: millimeter, symbol mm) is one thousandth of a metre, which is the International System of Units (SI) base unit of length. The millimetre is part of a metric system. A corresponding unit of area is the square millimetre and a corresponding unit of volume is the cubic millimetre.
A light-minute (also written light minute) is a unit of length. It is defined as the distance light travels in an absolute vacuum in one minute or 17,987,547,480 metres (~18 Gm). Note that this value is exact, since the metre is actually defined in terms of the light-second.
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