Area units calculator & converter tool
Perche2 Conversions Table
Equivalent of 10 Square perche: |
252.92827712845 m2 (Square meter) |
2529282.7712845 cm2 (Square centimeter) |
25292.827712845 dm2 (Square decimeter) |
252928277.12845 mm2 (Square milimeter) |
0.00025292827712845 km2 (Square Kilometer) |
0.025292827712845 Hectare |
2.5292827712845 Are |
0.25292827712845 Decare |
252.92827712845 Centiare |
0.073982785701459 Arpent |
252928.27712845 Barn |
2722.494682183 Square feet |
0.062499841919827 Acre |
9.7655607799296E-5 Square mil |
302.49969016286 Square yard |
392039.99999905 Square inch |
2.7139204135883E-6 Canton |
0.00039052125988633 Homestead |
0.24999430911376 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.