A barn is a nuclear cross-section unit equal to 1e-28 square meters.
Barns to Square inches Converter — b to in2
Convert Barn (b) to Square inch (in2) using the exact conversion factor (1 barn = 1.550003e-25 square inch). See the formula, worked examples, and conversion table.
Barns to Square inches 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 square inch is the area of a one-inch square.
Result = input x 1e-28 / 0.00064516.
Area uses the square meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Barns to Square inches
Comparing Barn and Square inch 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 a square inch is the area of a one-inch square.
Formula
square inches = barns × 1.550003e-25
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 inch equals 0.00064516 base units, so dividing one by the other gives the direct barn-to-square inch factor of 1.550003e-25.
Simple example
1 b × 1.550003e-25 = 1.550003e-25 in2
1 barn = 1.550003e-25 square inches.
Real-world example
10 b × 1.550003e-25 = 1.550003e-24 in2
10 barns = 1.550003e-24 square inches.
Conversion table
| Barn (b) | Square inch (in2) |
|---|---|
| 1 b | 1.550003e-25 in2 |
| 5 b | 7.750016e-25 in2 |
| 10 b | 1.550003e-24 in2 |
| 25 b | 3.875008e-24 in2 |
| 50 b | 7.750016e-24 in2 |
| 100 b | 1.550003e-23 in2 |
Reverse conversion: Square inch to Barn
1.550003e-25 in2 × 6.4516e+24 = 0.9999999355 b
1.550003e-25 square inches = 0.9999999355 barns.
barns = square inches × 6.4516e+24
For a page dedicated to this direction, see Square inch to Barn.
Understanding the Barn (b)
A barn is a nuclear cross-section unit equal to 1e-28 square meters.
Understanding the Square inch (in2)
A square inch is the area of a one-inch square.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many square inches are in 1 barn?
1 barn equals 1.550003e-25 square inches, using the exact defined conversion factor rather than an estimate.
How do I convert barn to square inch?
Multiply the barn value by 1.550003e-25. The converter above does this instantly to whatever precision you set.
How do I convert square inch back to barn?
Use the reverse factor: 1 square inch equals 6.4516e+24 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 inch?
Square inch (in2) is a unit of area.
Is the barn to square inch conversion exact?
Yes. Both barn and square inch are defined by fixed standards rather than physical artifacts, so the factor of 1.550003e-25 used above is exact to as many digits as you choose to display.