Area units calculator & converter tool
Perche2 Conversions Table
Equivalent of 3 Square perche: |
75.878483138536 m2 (Square meter) |
758784.83138536 cm2 (Square centimeter) |
7587.8483138536 dm2 (Square decimeter) |
75878483.138536 mm2 (Square milimeter) |
7.5878483138536E-5 km2 (Square Kilometer) |
0.0075878483138536 Hectare |
0.75878483138536 Are |
0.075878483138536 Decare |
75.878483138536 Centiare |
0.022194835710438 Arpent |
75878.483138536 Barn |
816.74840465489 Square feet |
0.018749952575948 Acre |
2.9296682339789E-5 Square mil |
90.749907048858 Square yard |
117611.99999972 Square inch |
8.141761240765E-7 Canton |
0.0001171563779659 Homestead |
0.074998292734129 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.