Convert Barns to Ares
Convert Barns (b) to Ares (a) instantly and accurately.
Conversion Formula
a = b × 1.000000000e-30
About Barns
A barn (b) is a unit of area used in nuclear and particle physics to measure effective cross-sections of atomic nuclei and particle interaction probabilities. Equal to 10⁻²⁸ m² (10⁻²⁴ cm²), it was humorously named during the Manhattan Project - physicists joked that uranium nuclei were 'as big as a barn' at the subatomic scale. Particle physics experiments at accelerators like CERN report cross-sections in millibarns (mb), microbarns (μb), nanobarns (nb), and femtobarns (fb).
About Ares
An are (a) is a metric unit of area equal to 100 square meters (10 m × 10 m). Though less commonly used today, it served as an intermediate unit between square meters and hectares in the metric system. One are equals 0.01 hectares or about 119.6 yd². It is still occasionally used in some European countries for measuring medium-sized land plots, gardens, and vineyards. The dekameter-squared (dam²) is another name for the same unit.
Quick Reference Table
| Barns (b) | Ares (a) |
|---|---|
| 1 b | 1 × 10-30 a |
| 2 b | 2 × 10-30 a |
| 5 b | 5 × 10-30 a |
| 10 b | 1 × 10-29 a |
| 25 b | 2.5 × 10-29 a |
| 50 b | 5 × 10-29 a |
| 100 b | 1 × 10-28 a |