## ››Convert barn to acre

 barn acre

 Did you mean to convert barn to acre acre [commercial] acre [Ireland] acre [survey]

How many barn in 1 acre? The answer is 4.0468564224E+31.
We assume you are converting between barn and acre.
You can view more details on each measurement unit:
barn or acre
The SI derived unit for area is the square meter.
1 square meter is equal to 1.0E+28 barn, or 0.00024710538146717 acre.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between barns and acres.
Type in your own numbers in the form to convert the units!

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You can do the reverse unit conversion from acre to barn, or enter any two units below:

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## ››Definition: Barn

A barn is a unit of area, abbreviated mostly as "bn", equal to 10-28 m2. Although not an official SI unit, it is widely used by nuclear physicists, since it is convenient for expressing the cross sectional area of nuclei and nuclear reactions. A barn is approximately equal to the area of a uranium nucleus.

## ››Definition: Acre

An acre is a measure of land area in Imperial units or U.S. customary units. It is equal to 43 560 square feet, 4840 square yards, or 160 square rods. The precise meaning of this depends on the exact definition adopted for a foot: the international acre is 4 046.856 422 4 m² (for the UK, see). For measurements based specifically on the US survey foot the US survey acre is ca. 4 046.872 610 m².

## ››Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!