barn
| Symbol: | b |
| Category: | Area |
| SI Equivalent: | 1×10-28 m2 |
| Dimension: | L2 |
| Notes | |
| In 1942, H. G. Holloway and C. P. Baker introduced this unit to describe certain phenomena in nuclear physics such as fission, capture, diffusion, and absorption of nuclides. | |
57 conversions, showing those commonly used | Show all
1 b =
| Area | ||
| Symbol | Unit Name | |
| 2.47105×10-32 | ac, acre | acre |
| 1×10-32 | ha | hectare |
| 1×10-24 | cm2 | square centimeter |
| 1.07639×10-27 | ft2 | square foot |
| 1×10-32 | hm2 | square hectometer |
| 1.55×10-25 | in2, sq. in | square inch |
| 1×10-34 | km2 | square kilometer |
| 1×10-28 | m2 | square meter |
| 1×10-16 | µm2 | square micrometer |
| 1.55×10-19 | mil2 | square mil (thou) |
| 3.86101×10-35 | sq. mi. (int.) | square mile (int.) |
| 1×10-22 | mm2 | square millimeter |
| 1.19599×10-28 | yd2, sq. yd | square yard |
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