Convert Square Miles to Barns
Convert Square Miles (mi²) to Barns (b) instantly and accurately.
Conversion Formula
b = mi² × 2.589988110e+34
About Square Miles
A square mile (mi²) is an imperial unit of area equal to a square with sides of one mile (5,280 ft × 5,280 ft). It is used for measuring large land areas like counties, states, and countries in the United States. Los Angeles covers about 503 mi², Rhode Island (smallest US state) is roughly 1,214 mi², and Alaska is about 665,384 mi². This unit is standard in American geography, land surveying, and regional planning.
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).
Quick Reference Table
| Square Miles (mi²) | Barns (b) |
|---|---|
| 1 mi² | 2.59 × 1034 b |
| 2 mi² | 5.18 × 1034 b |
| 5 mi² | 1.295 × 1035 b |
| 10 mi² | 2.59 × 1035 b |
| 25 mi² | 6.475 × 1035 b |
| 50 mi² | 1.295 × 1036 b |
| 100 mi² | 2.59 × 1036 b |