Area units calculator & converter tool
M2 Conversions Table
Equivalent of 3 m2 (Square meter): |
| 30000 cm2 (Square centimeter) |
| 300 dm2 (Square decimeter) |
| 3000000 mm2 (Square milimeter) |
| 3.0E-6 km2 (Square Kilometer) |
| 0.0003 Hectare |
| 0.03 Are |
| 0.003 Decare |
| 3 Centiare |
| 0.000877515 Arpent |
| 3000 Barn |
| 32.2917 Square feet |
| 0.000741315 Acre |
| 0.1186107 Square perche |
| 1.1583E-6 Square mil |
| 3.58797 Square yard |
| 4650.0138827888 Square inch |
| 3.219E-8 Canton |
| 4.632E-6 Homestead |
| 0.0029652 Rood |
M2 / Barn Units Definition
m2 (Square meter)
The square meter, also called meter squared, is the unit of area of the International Standardized System (SI). The symbol for square meter is m2. Less formally, the square meter is sometimes abbreviated to m2.1 square meter is equal to the area of a square whose sides measure 1 meter.
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.