Area units calculator & converter tool
Km2 Conversions Table
Equivalent of 8 km2 (Square Kilometer): |
8000000 m2 (Square meter) |
80000000000 cm2 (Square centimeter) |
800000000 dm2 (Square decimeter) |
8000000000000 mm2 (Square milimeter) |
800 Hectare |
80000 Are |
8000 Decare |
8000000 Centiare |
2340.04 Arpent |
8000000000 Barn |
86111200 Square feet |
1976.84 Acre |
316295.2 Square perche |
3.0888 Square mil |
9567920 Square yard |
12400037020.77 Square inch |
0.08584 Canton |
12.352 Homestead |
7907.2 Rood |
Km2 / Barn Units Definition
km2 (Square Kilometer)
The square kilometer (km2) is a unit of measurement of area. One square kilometer is equal to the area of a square whose sides measure one kilometer.
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.