Convert Barn to Shed
Convert barns to sheds instantly. 1 barn = 1e+24 shed — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Shed to Barn converter for the reverse conversion.
Units explained
Barn
A barn is a scientific unit of area equal to exactly 10⁻²⁸ m² (100 fm²). It is used in nuclear and particle physics to express interaction cross-sections.
Named in 1942 at Purdue University by physicists working on the Manhattan Project. The name comes from the phrase 'big as a barn' — uranium nuclei have cross-sections this large, which physicists initially considered surprisingly large for nuclear targets.
Barns and their submultiples (millibarn, microbarn, nanobarn, picobarn, femtobarn) are the standard units for cross-section measurements in nuclear physics, high-energy physics, and accelerator experiments. The Higgs boson production cross-section at the LHC is in the picobarn range.
Named in 1942 during the Manhattan Project; adopted internationally in particle physics.
Shed
A shed is a humorous physics unit of area equal to exactly 10⁻⁵² m² (10⁻²⁴ barn or 10⁻¹⁸ outhouse).
Coined by physicists in extending the 'barn' humor. If the barn is the large building, a 'shed' is much smaller.
Sheds are essentially theoretical and appear in physics jokes rather than serious literature. The actual interaction cross-sections at this scale would require extremely speculative beyond-Standard-Model physics.
Physics community humor; theoretical interest only.
Barn to Shed conversion formula
The relationship between barns and sheds:
To convert barns to sheds, multiply the value in barns by 1e+24. To reverse, multiply sheds by 1e-24.
How to use this converter
Type a value into the calculator. The result in sheds updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Shed to Barn converter for the reverse direction.
Step-by-step: convert barns to sheds
- Write down the value in barns (b).
- Multiply that value by the factor 1e+24.
- The product is the equivalent value in sheds (shed).
- To reverse, multiply the shed value by 1e-24.
Worked examples
Example 1 — Convert 1 b to shed:
1 × 1e+24 = 1e+24 shed
Example 2 — Convert 100 b to shed:
100 × 1e+24 = 1e+26 shed
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 barns can be re-expressed in sheds for direct comparison with another instrument's calibration data sheet.
800 b × 1e+24 = 8e+26 shed
Real-world example — Molecular dimensions
The diameter of small molecular structures (around 2 barns) is often converted into related sub-micron units when comparing measurements across different microscopy techniques or imaging modalities.
2 b × 1e+24 = 2e+24 shed
Barn to Shed conversion table
Standard reference values for converting barns to sheds:
| Barn [b] | Shed [shed] |
|---|---|
| 0.01 | 1e+22 |
| 0.1 | 1e+23 |
| 1 | 1e+24 |
| 2 | 2e+24 |
| 3 | 3e+24 |
| 4 | 4e+24 |
| 5 | 5e+24 |
| 10 | 1e+25 |
| 20 | 2e+25 |
| 30 | 3e+25 |
| 40 | 4e+25 |
| 50 | 5e+25 |
| 100 | 1e+26 |
| 500 | 5e+26 |
| 1000 | 1e+27 |
Frequently asked questions
How many sheds is 1 barn?
How do I convert barns to sheds?
How do I convert sheds back to barns?
How many sheds is 100 barns?
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Sources & references
Conversion factor (1 b = 1e+24 shed) 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 Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.