Area units calculator & converter tool
Perche2 Conversions Table
Equivalent of 15 Square perche: |
379.39241569268 m2 (Square meter) |
3793924.1569268 cm2 (Square centimeter) |
37939.241569268 dm2 (Square decimeter) |
379392415.69268 mm2 (Square milimeter) |
0.00037939241569268 km2 (Square Kilometer) |
0.037939241569268 Hectare |
3.7939241569268 Are |
0.37939241569268 Decare |
379.39241569268 Centiare |
0.11097417855219 Arpent |
379392.41569268 Barn |
4083.7420232745 Square feet |
0.09374976287974 Acre |
0.00014648341169894 Square mil |
453.74953524429 Square yard |
588059.99999858 Square inch |
4.0708806203825E-6 Canton |
0.0005857818898295 Homestead |
0.37499146367065 Rood |
Perche2 / Barn Units Definition
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.
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.