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How many millimetre in 1 em?
The answer is 4.2175176.
We assume you are converting between millimetre and em.
You can view more details on each measurement unit:
millimetre or em
The SI base unit for length is the metre.
1 metre is equal to 1000 millimetre, or 237.10630158366 em.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between millimetres and em.
Type in your own numbers in the form to convert the units!
1 millimetre to em = 0.23711 em
5 millimetre to em = 1.18553 em
10 millimetre to em = 2.37106 em
20 millimetre to em = 4.74213 em
30 millimetre to em = 7.11319 em
40 millimetre to em = 9.48425 em
50 millimetre to em = 11.85532 em
75 millimetre to em = 17.78297 em
100 millimetre to em = 23.71063 em
You can do the reverse unit conversion from em to millimetre, or enter any two units below:
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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.
ConvertUnits.com 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!