Millimeter to Decimeter Converter (and vice versa)

Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026

This converter allows you to convert millimeters [mm] to decimeters [dm] or decimeters [dm] to millimeters [mm]. Calculations are performed in both directions. The calculation result and the entered value are displayed with up to 20 decimal places for maximum accuracy.

1 millimeter [mm] = 0.01 decimeters [dm]1 decimeter [dm] = 100 millimeters [mm]

Convert millimeters to decimeters

There are two simple ways to convert millimeters [mm] to decimeters [dm]. In the first calculation method, the value in millimeters [mm] is divided by 100. The second method multiplies the value in millimeters [mm] by 0.01.

  • Decimeters [dm] = millimeters [mm] ÷ 100
  • Decimeters [dm] = millimeters [mm] * 0.01

Convert decimeters to millimeters

Converting decimeters [dm] to millimeters [mm] is easy and can be done in two ways. The first method involves multiplication, whereby the value in decimeters [dm] is multiplied by 100. The second variant is a division. Here, the value in decimeters [dm] is divided by 0.01.

  • Millimeters [mm] = decimeters [dm] * 100
  • Millimeters [mm] = decimeters [dm] ÷ 0.01

Converter

Decimal places

How it's calculated

Factor: 
100
Millimeters=Decimeters*100
Decimeters=
Millimeters100

To all available units

Millimeters

⅛ Inches

Millimeters

Eighth miles

Millimeters

Exameters

Millimeters

Fathoms

Millimeters

Femtometers

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