Area units calculator & converter tool
Perche2 Conversions Table
Equivalent of 7 Square perche: |
177.04979398992 m2 (Square meter) |
1770497.9398992 cm2 (Square centimeter) |
17704.979398992 dm2 (Square decimeter) |
177049793.98992 mm2 (Square milimeter) |
0.00017704979398992 km2 (Square Kilometer) |
0.017704979398992 Hectare |
1.7704979398992 Are |
0.17704979398992 Decare |
177.04979398992 Centiare |
0.051787949991021 Arpent |
177049.79398992 Barn |
1905.7462775281 Square feet |
0.043749889343879 Acre |
6.8358925459507E-5 Square mil |
211.749783114 Square yard |
274427.99999934 Square inch |
1.8997442895118E-6 Canton |
0.00027336488192043 Homestead |
0.17499601637964 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.