To convert mm to dm enter the value in the field below and select the target unit, the value will be displayed below:
| 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 | |
The formulas for conversion are represented below:
dm = mm / 100
Example: 30 Millimeters in Decimeters:
dm = mm / 100
dm = 30 / 100
dm = 0.3
mm = dm * 100
Example: 1.5 Decimeters in Millimeters:
mm = dm * 100
mm = 1.5 * 100
mm = 150
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
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