mm² to dm²
39 unitsResult1.000000e-4
0.0001dm²
1 mm² × 0.0001 = 0.0001 dm²
Convert Square millimeter to Square decimeter (mm² to dm²)
1 square millimeter = 0.0001 square decimeters. Convert square millimeters to square decimeters instantly, with the exact factor, the formula and a reference table of common values.
Formula
square decimeters = square millimeters × 0.0001
mm² to dm² conversion table
| mm² | dm² |
|---|---|
| 1 mm² | 0.0001 dm² |
| 2 mm² | 0.0002 dm² |
| 3 mm² | 0.0003 dm² |
| 5 mm² | 0.0005 dm² |
| 10 mm² | 0.001 dm² |
| 20 mm² | 0.002 dm² |
| 50 mm² | 0.005 dm² |
| 100 mm² | 0.01 dm² |
| 250 mm² | 0.025 dm² |
| 500 mm² | 0.05 dm² |
| 1000 mm² | 0.1 dm² |
What is a square millimeter?
A square millimeter is a tiny square one millimeter on each side; a million of them make one square meter. It is about the size of a pinhead.
Engineers and machinists use it for wire cross-sections, small components and tolerances, and biologists use it under the microscope.
In writing, the square millimeter is usually shortened to "mm²". One square millimeter is 0.000001 square meters, and that ratio is what every number on this page is built from.