Convert Millibarn to Outhouse
Convert millibarns to outhouses instantly. 1 millibarn = 1000 outhouse — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Outhouse to Millibarn converter for the reverse conversion.
Units explained
Millibarn
A millibarn is a scientific unit of area equal to exactly 10⁻³¹ m² (1/1000 of a barn).
Derived from the barn using the standard SI milli- prefix.
Millibarns are widely used in particle physics for medium-strength interaction cross-sections. The total proton-proton inelastic cross-section is on the order of 70 mb at LHC energies.
Standard derivative of the barn unit.
Outhouse
An outhouse is a humorous physics unit of area equal to exactly 10⁻³⁴ m² (10⁻⁶ barn), identical in value to the microbarn.
Coined by physicists as a humorous extension of the 'barn' nomenclature: if the barn is a large physics target, then by analogy something millionfold smaller is an 'outhouse'.
Outhouses are virtually never used in serious physics literature but exist as a defined humor unit. Microbarn is the preferred professional term.
Physics community humor; rarely used in practice.
Millibarn to Outhouse conversion formula
The relationship between millibarns and outhouses:
To convert millibarns to outhouses, multiply the value in millibarns by 1000. To reverse, multiply outhouses by 0.001.
How to use this converter
Type a value into the calculator. The result in outhouses updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Outhouse to Millibarn converter for the reverse direction.
Step-by-step: convert millibarns to outhouses
- Write down the value in millibarns (mb).
- Multiply that value by the factor 1000.
- The product is the equivalent value in outhouses (outh).
- To reverse, multiply the outhouse value by 0.001.
Worked examples
Example 1 — Convert 1 mb to outh:
1 × 1000 = 1000 outh
Example 2 — Convert 100 mb to outh:
100 × 1000 = 100000 outh
Real-world example — Molecular dimensions
The diameter of small molecular structures (around 2 millibarns) is often converted into related sub-micron units when comparing measurements across different microscopy techniques or imaging modalities.
2 mb × 1000 = 2000 outh
Real-world example — Wavelengths across the spectrum
Optical and atomic-scale phenomena are routinely cross-converted between sub-micron units. A photon of wavelength 800 millibarns can be re-expressed in outhouses for direct comparison with another instrument's calibration data sheet.
800 mb × 1000 = 800000.0000000001 outh
Millibarn to Outhouse conversion table
Standard reference values for converting millibarns to outhouses:
| Millibarn [mb] | Outhouse [outh] |
|---|---|
| 0.01 | 10 |
| 0.1 | 100 |
| 1 | 1000 |
| 2 | 2000 |
| 3 | 3000 |
| 4 | 4000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 30 | 30000 |
| 40 | 40000 |
| 50 | 50000 |
| 100 | 100000 |
| 500 | 500000.0000000001 |
| 1000 | 1000000.0000000001 |
Frequently asked questions
How many outhouses is 1 millibarn?
How do I convert millibarns to outhouses?
How do I convert outhouses back to millibarns?
How many outhouses is 100 millibarns?
Popular area unit conversions
Convert Millibarn to other area units
Show all Millibarn conversions
Metric / SI (5 units)
Imperial / US Customary (3 units)
Scientific / Physics (4 units)
Sources & references
Conversion factor (1 mb = 1000 outh) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.