Square metric area unit.
Square Nanometers to Barns Converter — nm2 to b
Convert Square Nanometer (nm2) to Barn (b) using the exact conversion factor (1 square nanometer = 10,000,000,000 barn). See the formula, worked examples, and conversion table.
Square Nanometers 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-18 / 1e-28.
Area uses the square meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Square Nanometers to Barns
Comparing Square Nanometer 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 nanometers × 10000000000
This factor comes from each unit's defined relationship to the category's base unit: 1 square nanometer equals 1e-18 base units, and 1 barn equals 1e-28 base units, so dividing one by the other gives the direct square nanometer-to-barn factor of 10000000000.
Simple example
1 nm2 × 10000000000 = 10,000,000,000 b
1 square nanometer = 10,000,000,000 barns.
Real-world example
10 nm2 × 10000000000 = 100,000,000,000 b
10 square nanometers = 100,000,000,000 barns.
Conversion table
| Square Nanometer (nm2) | Barn (b) |
|---|---|
| 1 nm2 | 10,000,000,000 b |
| 5 nm2 | 50,000,000,000 b |
| 10 nm2 | 100,000,000,000 b |
| 25 nm2 | 250,000,000,000 b |
| 50 nm2 | 500,000,000,000 b |
| 100 nm2 | 1e+12 b |
Reverse conversion: Barn to Square Nanometer
1 b × 1e-10 = 1e-10 nm2
1 barn = 1e-10 square nanometers.
square nanometers = barns × 1e-10
For a page dedicated to this direction, see Barn to Square Nanometer.
Understanding the Square Nanometer (nm2)
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 nanometer?
1 square nanometer equals 10,000,000,000 barns, using the exact defined conversion factor rather than an estimate.
How do I convert square nanometer to barn?
Multiply the square nanometer value by 10000000000. The converter above does this instantly to whatever precision you set.
How do I convert barn back to square nanometer?
Use the reverse factor: 1 barn equals 1e-10 square nanometers. You can also use the swap control in the converter above to flip the direction instantly.
What is a square nanometer?
Square Nanometer (nm2) is a unit of area.
What is a barn?
Barn (b) is a unit of area.
Is the square nanometer to barn conversion exact?
Yes. Both square nanometer and barn are defined by fixed standards rather than physical artifacts, so the factor of 10000000000 used above is exact to as many digits as you choose to display.