Area units calculator & converter tool
Barn Conversions Table
Equivalent of 20 Barn: |
0.02 m2 (Square meter) |
200 cm2 (Square centimeter) |
2 dm2 (Square decimeter) |
20000 mm2 (Square milimeter) |
2.0E-8 km2 (Square Kilometer) |
2.0E-6 Hectare |
0.0002 Are |
2.0E-5 Decare |
0.02 Centiare |
5.8501E-6 Arpent |
0.215278 Square feet |
4.9421E-6 Acre |
0.000790738 Square perche |
7.722E-9 Square mil |
0.0239198 Square yard |
31.000092551925 Square inch |
2.146E-10 Canton |
3.088E-8 Homestead |
1.9768E-5 Rood |
Barn / Centiare Units Definition
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.
Centiare
The centiare is a unit of area used in the metric system, synonymous with square meter (m2). The abbreviation for centiare is ca. The abbreviation for centiare is ca. The centiare measurement is used almost exclusively for land measurements and is mainly used in countries where Dutch, French, German, Polish or Portuguese are spoken.