To convert barns to square miles, multiply the value by 3.86102 × 10⁻³⁵. To go the other way, multiply square miles by 2.58999 × 10³⁴ to get barns.
| Barns (b) | Square Miles (mi²) |
|---|---|
| 1 b | 3.86102 × 10⁻³⁵ mi² |
| 2 b | 7.72204 × 10⁻³⁵ mi² |
| 5 b | 1.93051 × 10⁻³⁴ mi² |
| 10 b | 3.86102 × 10⁻³⁴ mi² |
| 20 b | 7.72204 × 10⁻³⁴ mi² |
| 50 b | 1.93051 × 10⁻³³ mi² |
| 100 b | 3.86102 × 10⁻³³ mi² |
| 500 b | 1.93051 × 10⁻³² mi² |
| 1,000 b | 3.86102 × 10⁻³² mi² |
Barn (b). A barn is 10⁻²⁸ m², the unit particle physicists use for nuclear cross-sections.
Square mile (mi²). A square mile is 640 acres (2.58999 km²).
There are 3.86102 × 10⁻³⁵ square miles in one barn.
Multiply the number of barns by 3.86102 × 10⁻³⁵. For example, 10 barns equal 3.86102 × 10⁻³⁴ square miles.
One square mile equals 2.58999 × 10³⁴ barns.