Area units calculator & converter tool
Mm2 Conversions Table
Equivalent of 12 mm2 (Square milimeter): |
1.2E-5 m2 (Square meter) |
0.12 cm2 (Square centimeter) |
0.0012 dm2 (Square decimeter) |
1.2E-11 km2 (Square Kilometer) |
1.2E-9 Hectare |
1.2E-7 Are |
1.2E-8 Decare |
1.2E-5 Centiare |
3.51006E-9 Arpent |
0.012 Barn |
0.0001291668 Square feet |
2.96526E-9 Acre |
4.744428E-7 Square perche |
4.6332E-12 Square mil |
1.435188E-5 Square yard |
0.018600055531155 Square inch |
1.2876E-13 Canton |
1.8528E-11 Homestead |
1.18608E-8 Rood |
Mm2 / Perche2 Units Definition
mm2 (Square milimeter)
Unit of area measurement equal to a square with a side of one millimeter. Abbreviations: mm2, mm².
Square perche
A square perch (often shortened to just a perch) is a unit of measurement and is equal to 25.29285264 square metres. Confusingly, a perch (not the squared
variety) is also called a rod or pole because it’s based on a surveyor’s tool
measuring exactly 5½ yards or 16½ feet or ¼ of a surveyor’s chain. The perch or rod was helpful tool and measurement for a surveyor because it could be used to create a ‘perfect’ acre of 40 perches by 4 perches – remember 160 perches equals an acre.