Convert Barns to Square Furlongs
Convert Barns (b) to Square Furlongs (fur²) instantly and accurately.
Conversion Formula
fur² = b × 2.471053815e-33
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 Square Furlongs
A square furlong is an area unit equal to a square with sides of one furlong (220 yards or ~201.17 m), approximately 40,469 m² or exactly 10 acres. The furlong (from Old English 'furrow-long') was historically the standard ploughing distance, and 10 square furlongs equals one acre - a relationship that made traditional land surveying convenient. While square furlongs are rarely used in official modern measurements, they appear in historical land surveys, British horse racing contexts, and as a handy reference for visualising 10-acre blocks.
Quick Reference Table
| Barns (b) | Square Furlongs (fur²) |
|---|---|
| 1 b | 2.471 × 10-33 fur² |
| 2 b | 4.942 × 10-33 fur² |
| 5 b | 1.236 × 10-32 fur² |
| 10 b | 2.471 × 10-32 fur² |
| 25 b | 6.178 × 10-32 fur² |
| 50 b | 1.236 × 10-31 fur² |
| 100 b | 2.471 × 10-31 fur² |