μb\mu\text{b}

microbarn

Areaexact by definition

The microbarn is 10⁻³⁴ square metres, a millionth of a barn. Particle physics lives here and below: production cross sections at colliders are quoted in microbarns, nanobarns, picobarns and femtobarns, and the integrated luminosity that produces them is quoted in inverse units of the same.

Watch out: Collider datasets are described in inverse femtobarns, which is a count per unit cross section rather than an area. Multiplying an inverse femtobarn of luminosity by a cross section in femtobarns gives a number of events, which is the whole point of the unit.

1 μb\mu\text{b} 1.0000000e-34 m2\text{m}^{2}

One microbarn in every area unit

1microbarn (μb)this unit
0.001millibarn (mb)
0.000001barn (b)
1.00000e-16square nanometer (nm²)
1.00000e-22square micrometer (μm²)
1.97353e-25circular mil (cmil)
1.97353e-28thousand circular mils (kcmil)
1.00000e-28square millimeter (mm²)
1.00000e-30square centimeter (cm²)
1.55000e-31square inch (in²)
1.00000e-32square decimeter (dm²)
1.07639e-33square foot (ft²)
1.19599e-34square yard (yd²)
1.00000e-34square meter (m²)
3.02500e-35tsubo (tsubo)
3.95369e-36square rod (rd²)
1.00000e-36are (a)
2.47105e-37square chain (ch²)
1.00000e-37dunam (dunam)
9.88422e-38rood (rood)
2.47105e-38acre (ac)
1.00000e-38hectare (ha)
1.00000e-40square kilometer (km²)
3.86102e-41square mile (mi²)