Convert Barns to Dunam
Convert Barns (b) to Dunam (dunam) instantly and accurately.
Conversion Formula
dunam = b × 1.000000000e-31
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 Dunam
A dunam (also dönüm or donum) is a unit of land area equal to exactly 1,000 m², used across Turkey, Israel, Palestine, Jordan, Lebanon, Iraq, and former Ottoman Empire territories. One dunam equals one stremma and one decare. The modern metric dunam of 1,000 m² was standardised during the British Mandate period; older Ottoman dunams varied by region (approximately 919-1,600 m²). It remains the primary land measurement unit for agricultural and property records throughout the Middle East, with properties routinely listed in dunams in Israeli and Palestinian real estate.
Quick Reference Table
| Barns (b) | Dunam (dunam) |
|---|---|
| 1 b | 1 × 10-31 dunam |
| 2 b | 2 × 10-31 dunam |
| 5 b | 5 × 10-31 dunam |
| 10 b | 1 × 10-30 dunam |
| 25 b | 2.5 × 10-30 dunam |
| 50 b | 5 × 10-30 dunam |
| 100 b | 1 × 10-29 dunam |