Square metric area unit.
Square Yoctometers to Barns Converter — ym2 to b
Convert Square Yoctometer (ym2) to Barn (b) using the exact conversion factor (1 square yoctometer = 1e-20 barn). See the formula, worked examples, and conversion table.
Square Yoctometers 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-48 / 1e-28.
Area uses the square meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Square Yoctometers to Barns
Comparing Square Yoctometer 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 yoctometers × 1e-20
This factor comes from each unit's defined relationship to the category's base unit: 1 square yoctometer equals 1e-48 base units, and 1 barn equals 1e-28 base units, so dividing one by the other gives the direct square yoctometer-to-barn factor of 1e-20.
Simple example
1 ym2 × 1e-20 = 1e-20 b
1 square yoctometer = 1e-20 barns.
Real-world example
10 ym2 × 1e-20 = 1e-19 b
10 square yoctometers = 1e-19 barns.
Conversion table
| Square Yoctometer (ym2) | Barn (b) |
|---|---|
| 1 ym2 | 1e-20 b |
| 5 ym2 | 5e-20 b |
| 10 ym2 | 1e-19 b |
| 25 ym2 | 2.5e-19 b |
| 50 ym2 | 5e-19 b |
| 100 ym2 | 1e-18 b |
Reverse conversion: Barn to Square Yoctometer
1e-20 b × 1e+20 = 1 ym2
1e-20 barns = 1 square yoctometers.
square yoctometers = barns × 1e+20
For a page dedicated to this direction, see Barn to Square Yoctometer.
Understanding the Square Yoctometer (ym2)
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 yoctometer?
1 square yoctometer equals 1e-20 barns, using the exact defined conversion factor rather than an estimate.
How do I convert square yoctometer to barn?
Multiply the square yoctometer value by 1e-20. The converter above does this instantly to whatever precision you set.
How do I convert barn back to square yoctometer?
Use the reverse factor: 1 barn equals 1e+20 square yoctometers. You can also use the swap control in the converter above to flip the direction instantly.
What is a square yoctometer?
Square Yoctometer (ym2) is a unit of area.
What is a barn?
Barn (b) is a unit of area.
Is the square yoctometer to barn conversion exact?
Yes. Both square yoctometer and barn are defined by fixed standards rather than physical artifacts, so the factor of 1e-20 used above is exact to as many digits as you choose to display.