Length Converter
Result
... Millimeter = ... Decimeter
Result
... Millimeter
=
... Decimeter
Find the units to convert
Millimeter to Decimeter Converter
Use this page to convert millimeter values into decimeter, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 mm = 0.01 dm
1 dm = 100 mm
Example: 15 mm = 0.15 dm
Millimeter
A millimeter is 1/1,000 of a meter in the SI system.
History: It became widely used with metric manufacturing and engineering tolerances.
Current use: Millimeters are common in product specs, machining, and technical drawings.
Also written as mm, millimeters, millimetre, millimetres.
Decimeter
A decimeter is 1/10 of a meter in the SI system.
History: It follows directly from the metric prefix deci, meaning one tenth.
Current use: Decimeters are used in education, volume relationships, and some practical metric measurements.
Also written as dm, decimeters, decimetre, decimetres.
Millimeter to Decimeter table
| Millimeter [mm] | Decimeter [dm] |
|---|
| 0.01 mm | 0.0001 dm |
| 0.1 mm | 0.001 dm |
| 1 mm | 0.01 dm |
| 2 mm | 0.02 dm |
| 5 mm | 0.05 dm |
| 10 mm | 0.1 dm |
| 20 mm | 0.2 dm |
| 50 mm | 0.5 dm |
| 100 mm | 1 dm |
Frequently asked questions
How many Decimeter (dm) are in one Millimeter (mm)?
One Millimeter equals 0.01 Decimeter.
How do you convert Millimeter to Decimeter?
Multiply the Millimeter value by 0.01 to get the result in Decimeter.
How do you convert Decimeter back to Millimeter?
Multiply the Decimeter value by 100 to get back to Millimeter.
What is 15 Millimeter in Decimeter?
15 Millimeter equals 0.15 Decimeter.
