A barn is a nuclear cross-section unit equal to 1e-28 square meters.
Barns to Square Attometers Converter — b to am2
Convert Barn (b) to Square Attometer (am2) using the exact conversion factor (1 barn = 100,000,000 square attometer). See the formula, worked examples, and conversion table.
Barns to Square Attometers converter
Converter
Area Converter
Convert land, construction, mapping, survey, and scientific area units.
Context values
Some unit families need one extra value for a physically accurate result.
Square metric area unit.
Result = input x 1e-28 / 1e-36.
Area uses the square meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Barns to Square Attometers
Comparing Barn and Square Attometer is common in agriculture and real estate, where US land is typically measured in acres and most of the rest of the world uses hectares. Specifically: A barn is a nuclear cross-section unit equal to 1e-28 square meters, and square metric area unit.
Formula
square attometers = barns × 100000000
This factor comes from each unit's defined relationship to the category's base unit: 1 barn equals 1e-28 base units, and 1 square attometer equals 1e-36 base units, so dividing one by the other gives the direct barn-to-square attometer factor of 100000000.
Simple example
1 b × 100000000 = 100,000,000 am2
1 barn = 100,000,000 square attometers.
Real-world example
10 b × 100000000 = 1,000,000,000 am2
10 barns = 1,000,000,000 square attometers.
Conversion table
| Barn (b) | Square Attometer (am2) |
|---|---|
| 1 b | 100,000,000 am2 |
| 5 b | 500,000,000 am2 |
| 10 b | 1,000,000,000 am2 |
| 25 b | 2,500,000,000 am2 |
| 50 b | 5,000,000,000 am2 |
| 100 b | 10,000,000,000 am2 |
Reverse conversion: Square Attometer to Barn
1 am2 × 1e-8 = 1e-8 b
1 square attometer = 1e-8 barns.
barns = square attometers × 1e-8
For a page dedicated to this direction, see Square Attometer to Barn.
Understanding the Barn (b)
A barn is a nuclear cross-section unit equal to 1e-28 square meters.
Understanding the Square Attometer (am2)
Square metric area unit.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many square attometers are in 1 barn?
1 barn equals 100,000,000 square attometers, using the exact defined conversion factor rather than an estimate.
How do I convert barn to square attometer?
Multiply the barn value by 100000000. The converter above does this instantly to whatever precision you set.
How do I convert square attometer back to barn?
Use the reverse factor: 1 square attometer equals 1e-8 barns. You can also use the swap control in the converter above to flip the direction instantly.
What is a barn?
Barn (b) is a unit of area.
What is a square attometer?
Square Attometer (am2) is a unit of area.
Is the barn to square attometer conversion exact?
Yes. Both barn and square attometer are defined by fixed standards rather than physical artifacts, so the factor of 100000000 used above is exact to as many digits as you choose to display.