Convert Millimeters to Decimeters
How to use the converter
To convert mm to dm enter the value in the field below and select the target unit, the value will be displayed below:
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Conversion Tables
| Metric | |
|---|---|
| Kilometer (km) | |
| Meter (m) | |
| Decimeter (dm) | |
| Centimeter (cm) | |
| Millimeter (mm) | |
| Micrometer (µm) | |
| Nanometer (nm) | |
| Angstrom (Å) | |
| Astronomical | |
|---|---|
| Parsec (pc) | |
| Light-year | |
| Astronomical unit (AU) | |
| Light-minute | |
| Light-second | |
| British/American | |
|---|---|
| League | |
| Mile (mi) | |
| Furlong | Chain |
| Rod (rd) | |
| Yard (yd) | |
| Foot (ft) | |
| Link | |
| Hand | |
| Inch (in) | |
| Line | |
| Thousandth (mil) | |
| Thou (thou) | |
| Nautical | |
|---|---|
| Nautical mile | |
| Fathom | |
How to perform key conversions involving length measurements
The formulas for conversion are represented below:
Millimeters to Decimeters Formula
dm = mm / 100
Example: 30 Millimeters in Decimeters:
dm = mm / 100
dm = 30 / 100
dm = 0.3
Decimeters to Millimeters Formula
mm = dm * 100
Example: 1.5 Decimeters in Millimeters:
mm = dm * 100
mm = 1.5 * 100
mm = 150
Frequently asked questions involving length and distance
100 Millimeters are equal to how many Decimeters
Considering that 1 Millimeter is equivalent to 0.01 Decimeters, you can use a rule of three to obtain that 100 Millimeters equal 1 Decimeter.
1 mm - 0.01 dm
100 mm - x
Apply the rule of three and get:
x mm = 1 dmmm
x = 1 dm
100 Decimeters is equal to how many Millimeters?
If every 1 Decimeter we have 100 Millimeters, just multiply the number of Decimeters (100) by 100, so you will get that 100 dm equals 10,000 mm. Observe the calculation below:
mm = dm * 100
mm = 100 * 100
mm = 10000
