Convert barn [b] to square foot [ft^2] Online | Free area Converter

Barn [b]


A barn (b) is a very small unit of area used mainly in nuclear and particle physics to measure the cross-sectional area of atomic nuclei and particles.

1 barn = 10⁻²⁸ square meters (m²).

The name "barn" humorously refers to something “as big as a barn” in the tiny world of atomic scales, despite its extremely small size.


Square Foot [ft²]


A square foot (ft²) is a unit of area commonly used in the United States and other countries. It represents a square with sides 1 foot (12 inches) long.

1 square foot = 144 square inches = 0.0929 square meters.

Square feet are widely used to measure the area of rooms, houses, and small plots of land.



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