You can view more details on each measurement unit: cubic decimeters or millimeters cubed The SI derived unit for volume is the cubic meter. 1 cubic meter is equal to 1000 cubic decimeters, or 1000000000 millimeters cubed. Note that rounding errors may occur, so always check the results. The conversion factor from millimeters to decimeters is 0.01, which means that 1 millimeter is equal to 0.01 decimeters: 1 mm = 0.01 dm. To convert 75 millimeters into decimeters we have to multiply 75 by the conversion factor in order to get the length amount from millimeters to decimeters. We can also form a simple proportion to calculate the Task: Convert 18 kilometers to decimeters (show work) Formula: km x 10,000 = dm Calculations: 18 km x 10,000 = 180,000 dm Result: 18 km is equal to 180,000 dm Conversion Table For quick reference purposes, below is a conversion table that you can use to convert from km to dm. The conversion factor from decimeters to millimeters is 100, which means that 1 decimeter is equal to 100 millimeters: 1 dm = 100 mm. To convert 5 decimeters into millimeters we have to multiply 5 by the conversion factor in order to get the length amount from decimeters to millimeters. We can also form a simple proportion to calculate the result: 1 dm = 100 mm. To convert 10 decimeters into millimeters we have to multiply 10 by the conversion factor in order to get the length amount from decimeters to millimeters. We can also form a simple proportion to calculate the result: 1 dm → 100 mm. 10 dm → L (mm) Solve the above proportion to obtain the length L in millimeters: L (mm) = 10 Definition: A millimeter (symbol: mm) is a unit of length in the International System of Units (SI). It is defined in terms of the meter, as 1/1000 of a meter, or the distance traveled by light in 1/299 792 458 000 of a second. History/origin: The milli- prefix is one of many metric prefixes. It indicates one thousandth of the base unit, in 8.2 kilometers = 82,000 decimeters You can also apply the rules of base 10 to use the “move the decimal” shortcut method in this example. Notice how decimeters ( dm ) is four places to the right of kilometers ( km ); similarly, you move the decimal point four places to the right when converting 8.2 kilometers to decimeters. The use of feet has been around since ancient times by many different civilizations, but the actual length differed between them. The foot was used, e.g. in: Ancient Rome: 1 foot = 11.6 inches (295.7 mm). That was a standard foot, but in some provinces it could be as much as 13.2 inches (334 mm) Greece: 1 foot = 10.6-13.8 inches (270 - 350 mm) .

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