Area units calculator & converter tool
Dm2 Conversions Table
Equivalent of 19 dm2 (Square decimeter): |
0.19 m2 (Square meter) |
1900 cm2 (Square centimeter) |
190000 mm2 (Square milimeter) |
1.9E-7 km2 (Square Kilometer) |
1.9E-5 Hectare |
0.0019 Are |
0.00019 Decare |
0.19 Centiare |
5.557595E-5 Arpent |
190 Barn |
2.045141 Square feet |
4.694995E-5 Acre |
0.007512011 Square perche |
7.3359E-8 Square mil |
0.2272381 Square yard |
294.50087924329 Square inch |
2.0387E-9 Canton |
2.9336E-7 Homestead |
0.000187796 Rood |
Dm2 / Barn 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.
Barn
A barn (symbol: b) is a metric unit of area equal to 10-28 m2 (100 fm2). Originally used in nuclear physics to express the cross section of nuclei and nuclear reactions, it is also used today in all areas of high energy physics to express the cross sections of any diffusion process, and is best understood as a measure of the probability of interaction between small particles. A barn corresponds approximately to the cross section of a uranium nucleus. The barn is also the unit of area used in nuclear quadrupole resonance and nuclear magnetic resonance to quantify the interaction of a nucleus with an electric field gradient. Although the barn was never an SI unit, the SI standards body recognized it in the 8th SI brochure (replaced 2019) due to its use in particle physics.