Barns to Square Kilometers (b → km²)
Formula
1 b = 1e-34 km²Conversion Table
| b | km² |
|---|---|
| 0 | 0 |
| 1.0000 | 0.00000000000000000000000000000000010000 |
| 2.0000 | 0.00000000000000000000000000000000020000 |
| 3.0000 | 0.00000000000000000000000000000000030000 |
| 4.0000 | 0.00000000000000000000000000000000040000 |
| 5.0000 | 0.00000000000000000000000000000000050000 |
| 6.0000 | 0.00000000000000000000000000000000060000 |
| 7.0000 | 0.00000000000000000000000000000000070000 |
| 8.0000 | 0.00000000000000000000000000000000080000 |
| 9.0000 | 0.00000000000000000000000000000000090000 |
| 10.000 | 0.0000000000000000000000000000000010000 |
| 11.000 | 0.0000000000000000000000000000000011000 |
| 12.000 | 0.0000000000000000000000000000000012000 |
| 13.000 | 0.0000000000000000000000000000000013000 |
| 14.000 | 0.0000000000000000000000000000000014000 |
| 15.000 | 0.0000000000000000000000000000000015000 |
| 16.000 | 0.0000000000000000000000000000000016000 |
| 17.000 | 0.0000000000000000000000000000000017000 |
| 18.000 | 0.0000000000000000000000000000000018000 |
| 19.000 | 0.0000000000000000000000000000000019000 |
| b | km² |
|---|---|
| 20.000 | 0.0000000000000000000000000000000020000 |
| 21.000 | 0.0000000000000000000000000000000021000 |
| 22.000 | 0.0000000000000000000000000000000022000 |
| 23.000 | 0.0000000000000000000000000000000023000 |
| 24.000 | 0.0000000000000000000000000000000024000 |
| 25.000 | 0.0000000000000000000000000000000025000 |
| 26.000 | 0.0000000000000000000000000000000026000 |
| 27.000 | 0.0000000000000000000000000000000027000 |
| 28.000 | 0.0000000000000000000000000000000028000 |
| 29.000 | 0.0000000000000000000000000000000029000 |
| 30.000 | 0.0000000000000000000000000000000030000 |
| 31.000 | 0.0000000000000000000000000000000031000 |
| 32.000 | 0.0000000000000000000000000000000032000 |
| 33.000 | 0.0000000000000000000000000000000033000 |
| 34.000 | 0.0000000000000000000000000000000034000 |
| 35.000 | 0.0000000000000000000000000000000035000 |
| 36.000 | 0.0000000000000000000000000000000036000 |
| 37.000 | 0.0000000000000000000000000000000037000 |
| 38.000 | 0.0000000000000000000000000000000038000 |
| 39.000 | 0.0000000000000000000000000000000039000 |
| b | km² |
|---|---|
| 40.000 | 0.0000000000000000000000000000000040000 |
| 41.000 | 0.0000000000000000000000000000000041000 |
| 42.000 | 0.0000000000000000000000000000000042000 |
| 43.000 | 0.0000000000000000000000000000000043000 |
| 44.000 | 0.0000000000000000000000000000000044000 |
| 45.000 | 0.0000000000000000000000000000000045000 |
| 46.000 | 0.0000000000000000000000000000000046000 |
| 47.000 | 0.0000000000000000000000000000000047000 |
| 48.000 | 0.0000000000000000000000000000000048000 |
| 49.000 | 0.0000000000000000000000000000000049000 |
| 50.000 | 0.0000000000000000000000000000000050000 |
| 51.000 | 0.0000000000000000000000000000000051000 |
| 52.000 | 0.0000000000000000000000000000000052000 |
| 53.000 | 0.0000000000000000000000000000000053000 |
| 54.000 | 0.0000000000000000000000000000000054000 |
| 55.000 | 0.0000000000000000000000000000000055000 |
| 56.000 | 0.0000000000000000000000000000000056000 |
| 57.000 | 0.0000000000000000000000000000000057000 |
| 58.000 | 0.0000000000000000000000000000000058000 |
| 59.000 | 0.0000000000000000000000000000000059000 |
| b | km² |
|---|---|
| 60.000 | 0.0000000000000000000000000000000060000 |
| 61.000 | 0.0000000000000000000000000000000061000 |
| 62.000 | 0.0000000000000000000000000000000062000 |
| 63.000 | 0.0000000000000000000000000000000063000 |
| 64.000 | 0.0000000000000000000000000000000064000 |
| 65.000 | 0.0000000000000000000000000000000065000 |
| 66.000 | 0.0000000000000000000000000000000066000 |
| 67.000 | 0.0000000000000000000000000000000067000 |
| 68.000 | 0.0000000000000000000000000000000068000 |
| 69.000 | 0.0000000000000000000000000000000069000 |
| 70.000 | 0.0000000000000000000000000000000070000 |
| 71.000 | 0.0000000000000000000000000000000071000 |
| 72.000 | 0.0000000000000000000000000000000072000 |
| 73.000 | 0.0000000000000000000000000000000073000 |
| 74.000 | 0.0000000000000000000000000000000074000 |
| 75.000 | 0.0000000000000000000000000000000075000 |
| 76.000 | 0.0000000000000000000000000000000076000 |
| 77.000 | 0.0000000000000000000000000000000077000 |
| 78.000 | 0.0000000000000000000000000000000078000 |
| 79.000 | 0.0000000000000000000000000000000079000 |
Barns to Square Kilometers Conversion
Converting Barns (b) to Square Kilometers (km²) is a common area conversion. 1 b equals 0 km². For example, 100 b is equal to 0 km².
Quick Mental Math: Barns to Square Kilometers
1 barn is about 0.0000000000000000000000000000000001 square kilometers, so use that anchor for a quick conversion.
Why is converting Barns to Square Kilometers tricky?
barns to square kilometers swings by powers of 10^28, so a missing exponent changes the answer completely.
Quick Reference Values
1 b = 0 km². 5 b = 0 km². 10 b = 0 km². 25 b = 0 km². 50 b = 0 km². 100 b = 0 km².
What is Barns?
Barns (b) is a unit of area. The barn is a unit of area used primarily in nuclear physics to quantify cross-sectional areas of nuclei and particles. It equals 10^-28 square meters (m²) exactly. This unit facilitates expressing probabilities of nuclear reactions at atomic scales [nist-cuu]. The term 'barn' was coined during World War II by American physicists to represent a conveniently sized cross-sectional area for nuclear experiments. It was adopted informally in the 1940s and later recognized in physics literature [nist-cuu]. Barns are used internationally in nuclear physics, particle physics, and related fields. Organizations like the International Atomic Energy Agency (IAEA) and research institutions employ barns for reaction probability measurements [nist-cuu].
What is Square Kilometers?
Square Kilometers (km²) is a unit of area. A square kilometer is a unit of area defined by a square with sides of one kilometer each. It equals 1,000,000 square meters, making it a standard SI unit for measuring large land areas [bipm-si-brochure]. This unit is widely used in geography, urban planning, and environmental science. The kilometer was introduced in France in the late 18th century as part of the metric system. The square kilometer was adopted as a derived SI unit to quantify extensive surface areas, formalized by the BIPM in the 20th century [bipm-si-brochure]. Square kilometers are globally used for mapping countries, cities, and natural features. National statistical offices and international organizations employ km² in demographic and environmental data reporting [bipm-si-brochure].
Common Misspellings
People often search for this conversion using these alternate spellings: barn, barrn, barns unit, square kilometeres, sq km, square km, kilometer square, km2. All of these refer to the Barns to Square Kilometers conversion.