Area units calculator & converter tool
Km2 Conversions Table
Equivalent of 10 km2 (Square Kilometer): |
10000000 m2 (Square meter) |
100000000000 cm2 (Square centimeter) |
1000000000 dm2 (Square decimeter) |
10000000000000 mm2 (Square milimeter) |
1000 Hectare |
100000 Are |
10000 Decare |
10000000 Centiare |
2925.05 Arpent |
10000000000 Barn |
107639000 Square feet |
2471.05 Acre |
395369 Square perche |
3.861 Square mil |
11959900 Square yard |
15500046275.963 Square inch |
0.1073 Canton |
15.44 Homestead |
9884 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.