Square metric area unit.
Square Attometers to Barns Converter — am2 to b
Convert Square Attometer (am2) to Barn (b) using the exact conversion factor (1 square attometer = 1e-8 barn). See the formula, worked examples, and conversion table.
Square Attometers to Barns 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.
A barn is a nuclear cross-section unit equal to 1e-28 square meters.
Result = input x 1e-36 / 1e-28.
Area uses the square meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Square Attometers to Barns
Comparing Square Attometer and Barn 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: Square metric area unit, and a barn is a nuclear cross-section unit equal to 1e-28 square meters.
Formula
barns = square attometers × 1e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 square attometer equals 1e-36 base units, and 1 barn equals 1e-28 base units, so dividing one by the other gives the direct square attometer-to-barn factor of 1e-8.
Simple example
1 am2 × 1e-8 = 1e-8 b
1 square attometer = 1e-8 barns.
Real-world example
10 am2 × 1e-8 = 1e-7 b
10 square attometers = 1e-7 barns.
Conversion table
| Square Attometer (am2) | Barn (b) |
|---|---|
| 1 am2 | 1e-8 b |
| 5 am2 | 5e-8 b |
| 10 am2 | 1e-7 b |
| 25 am2 | 2.5e-7 b |
| 50 am2 | 5e-7 b |
| 100 am2 | 0.000001 b |
Reverse conversion: Barn to Square Attometer
1e-8 b × 100000000 = 1 am2
1e-8 barns = 1 square attometers.
square attometers = barns × 100000000
For a page dedicated to this direction, see Barn to Square Attometer.
Understanding the Square Attometer (am2)
Square metric area unit.
Understanding the Barn (b)
A barn is a nuclear cross-section unit equal to 1e-28 square meters.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many barns are in 1 square attometer?
1 square attometer equals 1e-8 barns, using the exact defined conversion factor rather than an estimate.
How do I convert square attometer to barn?
Multiply the square attometer value by 1e-8. The converter above does this instantly to whatever precision you set.
How do I convert barn back to square attometer?
Use the reverse factor: 1 barn equals 100,000,000 square attometers. You can also use the swap control in the converter above to flip the direction instantly.
What is a square attometer?
Square Attometer (am2) is a unit of area.
What is a barn?
Barn (b) is a unit of area.
Is the square attometer to barn conversion exact?
Yes. Both square attometer and barn are defined by fixed standards rather than physical artifacts, so the factor of 1e-8 used above is exact to as many digits as you choose to display.