How many mm in 1 decimeter?
The answer is 100.
We assume you are converting between millimetre and decimetre.
You can view more details on each measurement unit: mm or
decimeter
The SI base unit for length is the metre.
1 metre is equal to 1000 mm, or 10 decimeter.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between millimetres and decimeters.
Type in your own numbers in the form to convert the units!

››Quick conversion chart of mm to decimeter

1 mm to decimeter = 0.01 decimeter

10 mm to decimeter = 0.1 decimeter

50 mm to decimeter = 0.5 decimeter

100 mm to decimeter = 1 decimeter

200 mm to decimeter = 2 decimeter

500 mm to decimeter = 5 decimeter

1000 mm to decimeter = 10 decimeter

››Want other units?

You can do the reverse unit conversion from
decimeter 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.

››Definition: Decimeter

A decimetre (US: decimeter; symbol: dm) is a measurement of length, measuring 10 centimetres or one-tenth of a metre.

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