Area units calculator & converter tool
Dm2 Conversions Table
Equivalent of 18 dm2 (Square decimeter): |
0.18 m2 (Square meter) |
1800 cm2 (Square centimeter) |
180000 mm2 (Square milimeter) |
1.8E-7 km2 (Square Kilometer) |
1.8E-5 Hectare |
0.0018 Are |
0.00018 Decare |
0.18 Centiare |
5.26509E-5 Arpent |
180 Barn |
1.937502 Square feet |
4.44789E-5 Acre |
0.007116642 Square perche |
6.9498E-8 Square mil |
0.2152782 Square yard |
279.00083296733 Square inch |
1.9314E-9 Canton |
2.7792E-7 Homestead |
0.000177912 Rood |
Dm2 / Perche2 Units Definition
dm2 (Square decimeter)
Therefore, a square decimeter (or "square decimeter" in British spelling) is one tenth of a square meter. It can also be expressed by ten square centimeters. A rough example of a decimeter could be the average surface area of some smartphone screens.
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.