Area units calculator & converter tool
Perche2 Conversions Table
Equivalent of 16 Square perche: |
404.68524340553 m2 (Square meter) |
4046852.4340553 cm2 (Square centimeter) |
40468.524340553 dm2 (Square decimeter) |
404685243.40553 mm2 (Square milimeter) |
0.00040468524340553 km2 (Square Kilometer) |
0.040468524340553 Hectare |
4.0468524340553 Are |
0.40468524340553 Decare |
404.68524340553 Centiare |
0.11837245712233 Arpent |
404685.24340553 Barn |
4355.9914914928 Square feet |
0.099999747071723 Acre |
0.00015624897247887 Square mil |
483.99950426058 Square yard |
627263.99999848 Square inch |
4.3422726617413E-6 Canton |
0.00062483401581813 Homestead |
0.39999089458202 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.