Area units calculator & converter tool
Rood Conversions Table
Equivalent of 18 Rood: |
18211.250505868 m2 (Square meter) |
182112505.05868 cm2 (Square centimeter) |
1821125.0505868 dm2 (Square decimeter) |
18211250505.868 mm2 (Square milimeter) |
0.018211250505868 km2 (Square Kilometer) |
1.8211250505868 Hectare |
182.11250505868 Are |
18.211250505868 Decare |
18211.250505868 Centiare |
5.3268818292189 Arpent |
18211250.505868 Barn |
196024.07932011 Square feet |
4.5000910562525 Acre |
720.01639012546 Square perche |
0.0070313638203157 Square mil |
21780.473492513 Square yard |
28227522.55841 Square inch |
0.00019540671792796 Canton |
0.02811817078106 Homestead |
Rood / Barn Units Definition
Rood
Rood is an English unit of area equal to one quarter of an acre or 10,890 square feet, exactly 1,011.7141056 m2. A rectangle that is one furlong (i.e., 10 chains, or 40 rods) in length and one rod in width is one rood in area, as is any space comprising 40 perches (a perch being one square rod).
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.